How to surpass 6-8k levels in premier despite abhorrent teammates

I went down 2k in rating mostly due to team mates shouting at me one of the following:

* It's just a gaaaame!

* I do what I want and it's my free choice!

* Look at my kills?? So what if I don't give info??

* You give info, make smokes? So what, look at your kills??

* Why should we tell you what we do, are you our boss?

The list goes on and on...

I doubt that improving my shooting skills will make any influence on this sort of chemistry at this rating range.

There's nothing I can improve that will make the teammates walk along the smoke instead of waiting for it to expire...

There's nothing I can do that can make them coordinate instead of scatter across the map.

There's nothing I can do so the low tabber doesn't farm for AWP/Scout/Deagle, and then carries it in close quarters instead of switching for other guns.

Is this the same on higher ratings or is it just shit trash can at sub 10'000?