He answered above. His MMR was tanked from throwing, now he’s back to normal.
And support’s role isn’t to be heal bot, it’s to do what’s necessary to win.
I’ve seen loads of games where losing team has damage healed card. Generally means their tanks letting too much damage through, or enemy dps doing more damage as they’re better. Also a symptom of enemies not dying quickly enough.
Saw a Moira loss where she got 30k heals. Loss due to them not dealing with the enemy carry dps, which they could have done with Zen, Bap or Ana (Longer ranged offence). (To be fair, her dps were real bad, but if you want to win hard games as support, you need to get frags).
As to my own experience, I practiced a bunch of death match and had an 80% win rate from 1700 to 2000 as Lucio. I sought out duels and fragged out, with heals being secondary. Did less healing, but enemies were dead faster, so less healing required as less damage being inflicted. “Damage prevention”, if you will.