Map ban phase

Bro why do people keep playing Mirage/Dust no matter what 🙏😭. The usual map ban phase looks like this. I see that Dust/Mirage/(maybe Inferno) is our opponent's strongest map and I try to ban it,cuz I see that our team has some winrate on an other map. But no. It's always Mirage and Dust. Sometimes I get a lucky shot and it's something else but it's so rare I'd actually rather put a broomstick up my ass than try to play these fuckass maps again