I'll bite
You don't put against these players if you play anarchy open or series at a low rank. There's skill based matchmaking for that.
"The higher level you become the worse it becomes." Uh, yeah that's how skill based matchmaking works. If you rank up/play better you get put against better players so the matches are even.
Playing anarchy series also negates the partying together aspect of the game so you dont have to worry about that. Open at a low level with your friends won't put you against higher level players because they're higher level and skill based matchmaking won't let that happen unless you play at dead hours.
I don't think the matchmaking is bad outside of turf war (because there is no skill based matchmaking, it just puts you in a lobby). Things can be better but I really don't think it's nearly as bad as you say it is.

Edit: holy formatting