my recent experience with not-ARAM is that quick play was a fetid wastepool but storm league was pretty okay
the standout experience being a game on Spider Temple where I queued as healer/bruiser and two other teammates drafted a healer and a bruiser so I picked Valla and ended up solo soaking mid and top against a Xul while the teams 4v4’d in bot. then we hit 10 and slid into the teamfighting phase and we ran wild over the other team
anyway, main support, then nothing is your fault, except when it is (or, god forbid, you pick Ana and fuck up all your skillshots)