OK, after watching this, I can give you a couple of things to keep in mind the next time you play Qhira. First of all, never use a hard engage tool early in a fight, unless you know your team is with you, especially your tank. A lot of times you were using E or D, and either causing damage that was easily healed up, or getting yourself in a bad spot. You definitely had some really good Es, but most of the time they weren’t resulting in a kill, which is what you should be looking for. You were also in trouble a lot of the times because you used D to engage on a full health target, so had no way of getting out when things went sideways. If you are going to use D offensively, it should only be to finish someone off when you know it is safe to do so.
Second, try to use AoE abilities like Q and W where and when it will hit multiple targets. I saw several times where you threw a Q at a single target, when a slightly different angle could have hit a second target, putting more pressure on their healer, and giving you more healing from your W.
Third, do not get baited into chasing a kill if you cannot account for most of the enemy team. That happened in bottom lane when you thought you had a kill on their Nova, but the rest of her team was right above you, and you ended up getting ganked instead. Yes, kills are your job as an assassin, but sometimes you have to let one get away.
All three of those things could be because you are used to playing Valeera, who is primarily a single-target hero, and has a number of ways to get out of situations that she doesn’t want to be in. Remind yourself that you aren’t as safe, and you should be looking for multi-target opportunities.
Last, and this applies to every single hero and role, one major thing I noted about your positioning is that you didn’t seem to respect what I internally refer to as “their side” of things. For example, if I am attacking a minion wave or a fort, I mentally view it as having a “my side” and a “their side”. “My side” is the safe side, closest to my structures, healer, tank, or escape route. In other words, the thing I am hitting is between me and where they are most likely to be. “Their side” means I am between the thing and the area they may be coming from.
Whenever I cannot account for the enemy team, or if it is a situation I may want to leave in a hurry, I make sure I stay on “my side” of things. For example, just before the second objective, your team was attacking their fort (good). Too many of your team, including you, were on “their side” of the fort you were attacking (bad). Your Tychus took this to the extreme, and went charging into a 2v5 against a Bloodlust Rehgar and Stitches, and promptly died.
At that point, you should have been on “your side” of the fort, or just left completely, as it gave them a chance to run you down and kill you too. If you want an even better example of a complete failure to respect “their side”, just watch the replay from the perspective of your Tychus, he was far worse at that than you!
With Valeera, she often wants to be on “their side” of things, as she is designed to be disruptive and get away with it. Most other heroes aren’t quite as safe doing that, so it is one thing you can practice that may help in the future.