I used to solo-queue almost exclusively. Almost always every teammate communicated. This was like 5+ years ago though, so maybe things have changed. I also frequently initiated the communication and kept things going and didn’t get mad at people, so that all helps too. From my experience, be nice and communicate and general the same will be returned, but against this was a while ago.
(I’m assuming CS is Counter Strike, and not like competitive multiplayer Cities Skylines or something.)