actual reason why this game is such a shit pit

After playing better and wining, one mostly doesnt get into higher tier of game, which would mean for enemy and team players's skill to be raised corespondingly....instead, you get just harder games , FOR PLAYING BETTER XD , which means higher skill oponents, while teammates skill remains the same or even lower....is that how competitive game is played? is it really

now theres a question to ask, why they want us to waste our time trying to play good... why do we even try.... lel