Anyone else encounter this error! The game keep kicking me out with this error and ban me after that I literally can't play 2 games in row Region: EU

I hover around silver 1. And every time I run a game, it's always 2 duelists, 1 initiator, 1 sentinel, and 1 smoke. I see on pro matches that they sometimes have 2 initiators or even 2 smokes. Why can't we do it like the pros? Edit: thanks...