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 for all the helpful answers! Seems like pros play it stratigicaly and try as hard a possible to win and ranked lobbies just play it for fun.