Just lost a game because my lane opponent was account sharing.

Feels shitty man :(. I was against lane as a poppy, and she was playing really well. Too well even. I mentioned that they were really good, and after some chitchat, they admitted to being on their friends account. I asked what rank they were and they said plat.

A plat player in a mid silver game. I managed 2 kills against them, but their overall game mechanics were way too good for me and the rest of my team to handle. Our botlane didn't do great either, but It might have been a salvageable game, had poppy been in our elo.

I know it's no ones fault, but It's still a super shitty thing to have to deal with. Is there any way to combat account sharing?

Edit: For some reason, people aren't reading this properly, so I'll emphasis that, as Oleandervine has stated, This has nothing to do with dynamic queue

This was someone literally going on their friends account and playing for them.