I’ve literally lost the last 17 ARAM matches. I’ve won 5 of 25 games.
Like I’m bad at the game, but not thaaat bad. Quickmatch w/r in 55%. It seems the the opponents always have a more balanced group and better players, while I get people who decide to not choose heal/tank when they need to.
Is there something going on here, or just super bad luck?
Yes you play the wrong game. If you want to have fun or be in a competitive environment you need to play something else. HOTS runs a RNG based matchmaking in ARAM and a ranked mode which allows groups >2 without any meaningful smurf prevention.
Qm WR doesn’t mean much. Have you ever tried ranked? If you lose 80% of your ARAMs your skill cap is probably around mid to low bronze.
There isn’t any matchmaking or balancing in ARAM so you will on average run into people who are at least silver-gold or higher.
I don’t think anyone should be looking at ARAM win rates. It’s even more random than QM. Which is saying a lot.
If you don’t enjoy the mode, don’t play the mode.
QM gives you more freedom while either Draft gives you better compositions at the expense of some succumbing to cooperation and time.
Apart from the chest, the main point of ARAM is to go against real people and practice your moves, as opposed to AI which usually lets you live, while either dodges like a GM or doesn’t at all. Except in ARAM you don’t choose your hero.
Say it with me. Aram is not meant to be balanced
If u want to win in aram. Try to fill roles rather than pick anything. Such as make sure that there is a tank and healer rather than picking your main.
AFAIK, ARAM has no match making, it just picks random people and tosses them into a game. Add the random hero choices and you have a very chaotic game mode.
Learn to play better.
And learn to accept that sometimes your allies are just not on the same page, so they’re going to make it a loss.
And no, there is no reason to build for a “standard comp” in ARAM.
Death timers and short travel distances and lack of different lanes and objectives all comes together to make it pretty irrelevant if you have a healer or tank or whatever.
ARAM doesn’t have matchmaking, but the usual tropes of “something has to be forcing [me] to lose” still crop up to blame the “matching” anyway.
Part of the issue is that the usual player is pretty bad at HotS, and aram really isn’t much different.
While the mode is still 5v5, not all players are worth that 20% of the team powerpie, so it’s not even so much “bad luck” for streaks of aram loses so much as it can be people not knowing how to “game the game”.
Allies will take bad hero/talents and enemies will all have the ‘good’ stuff, so obviously a person’s own pick should look for good synergies, self reliance, and/or backdoor potential.
Some people use aram to “learn” new heroes (that they haven’t played at all) others go for the ‘memes’ and intentionally pick heroes for a specific quest to complete, or to have as many of a single hero as possible.
Basic gist is that the mode has predictable qualities to it that set it apart from qm/draft, but many players still carry the same expectations of other modes, and essentially cripple their ability to ‘carry’ for a win.
For the most part of the mode isn’t “balanced”, but it also has more paper-rock-scissor type interactions that wouldn’t work out so well in other modes, but players don’t know about those, or don’t know to look for those because they bring a lot of baggage from their other play experiences that they tend to be not as ‘good’ at aram as they’d otherwise think.
blame blizzard for legitimizing this mode by allowing quests to be completed there 
What can you expect from a game mode that is random? There is nothing to balance, its a mode to goof off in and have fun, its not ment to be taken seriously.
Maybe stacks are more prevalent in ARAM which leads to loss streaks for solo players or smaller parties.
Otherwise yeah, bad luck, I go about three to three-- wins into losses into wins. More often I’m on like one or two losses and then one or two wins. If I hit four losses in a row, I stop, because that’s like an hour straight I’ve spent losing.
learn who the aram gods and the aram bads are.
like Samuro, i hear people calling for nerfs,
but in aram he’s pretty much a troll pick!
and as Avinicci said:
sometimes you’ll have your favourite character,
but the team has no healer and you have a healer option,
it sucks that you can’t play your main, but you need to pick the healer! 
if several people have healers, the best one should do it.
someone like Lucio or Stukov dominates the healing in aram
if someone has a stukov and someone else has an uther/trande or something,
the stukov should heal!
character select is the most important part of the match
for deciding if you win or lose. 
ARAM is a mode where double, even triple, healer comps can dominate. I would far rather end up with multiple healers than one person feel obliged to pick an assassin. Many healers have damage or utility talents that are far off the meta, but work well in the craziness that is ARAM.
Double Deckard is especially nasty.
So you could say they got hit with the Double Decker(d) bus?
…I’ll see myself out.
yep, double healer can be utterly unkillable sometimes
and i certainly won’t complain about getting a double healer comp if two people wanna do it!
i just mean that if several people have healer options, but noone wants to heal,
then the person with the best healer should just take one for the team!
personally i love playing a few of the healers,
but i’ll “take one for the team” if needed with any healer.
healerless teams can win, but its rather rare,
generally going against a healerless comp is a rather easy win.
I wouldn’t lose sleep over it if I were you, I had my fair share of 20 losses in a row over the years as well. From thousands of QM games (ashamed saying real number) my overall winrate is maybe one percent over 50 because I play random a lot I don’t tend to farm with broken heroes.
On the other hand I had far more luck with ARAM and brawls and from solo queued games I’m probably maintaining 60% winrate or higher. I wouldn’t know what I could attribute this to but it is definitely not the case of good or bad luck.
Could be because I’m just as comfortable playing every character in the game by now and there are many people who queue brawl to learn something new.
QM has a match maker so you get pushed to around a 50% win rate due to how MMR functions. Lose more games than that on average and you get easier opponents until near there. Win more games than that on average and you get harder opponents until near there.
ARAM has no match maker. As such your win rate will always be based on how your skill compares with the average. If it is below average then you will lose more than 50% of the time. Like wise if it is above average you will win more than 50% of the time. On top of that you have the RNG to fight since some selections can be unwinnable if the enemy team has skilled players with high tier hero choices.
That is the best way I’ve seen someone put it. A lot of players aren’t even putting forward 10%, or 5% of the teams impact, i.e. other players have to pull them up to have any chance of winning.
Then you have people like GM’s who can be as much as 80-100% of the teams impact if put on a lowly skilled team and still win. That is the closest thing to carrying this game has.
To OP, sorry but you are the weight being carried around in your ARAM’s, try to watch guides, practice as much of the hero pool as possible, learn micro skill on assassins etc.