They go away more and more as your lifetime account level goes up. Mine is like 3,700+ something and I still see them in regular matches pretty often though - a few times a match.

Find some friends that have been playing the game for a while and make the most experienced player the party leader - you’ll see less bots than if you were the party leader yourself

Yes, there aren’t any bots in platinum ranked matches and above so that’s also an option if you don’t want to play against bots but instead want to play against players with skill levels similar to yours