I spent some time playing my old main on Quick Play right now, couldn't break out of the 9-9.5 mil range. I haven't learned most of their character specific tech and they are very reliant on it, so that played a role. But the bulk of the problem was definitely me lacking in basic fundamentals and not being able to deal with the things I was recognizing. I wasn't surprised, I didn't expect to reach Elite with the state of my fundamentals and how unprepared I was with that character, but I did realize the benefit of Quick Play. I'll definitely start playing my new main there once I get comfortable with the movement and learn bnbs.
Usually I stop playing right when my connection gets spotty but I'll definitely invest in an ethernet adapter too.
Thanks for the tips!