I would cancel some of the challenges you currently have open and challenge other people instead.
cant start a new game

Try to join group membership... they have plenty of activities including games/matches to join that you no longer to challenge anybody.

i cant bring up the screen to start a new game
Is your browser up to date?
https://www.chess.com/forum/view/help-support/problems-for-older-browsers

I have a weird thing that when i try joining a game, it begins searching for an opponent but it doesnt give me one, and when i press cancel, nothing happens, it keeps searching. Its been like this for like 2 months already. Ive tried playing from a different browser but it doesnt work. Ive tried everything, but nothing works. I can only play if i join tournaments. Does anyone know how to fix this?

I have the same problem (or at least similar). When I try to start a new game it searches for an oponent but it never finds one. Use android app on phone /tablet. Tried two devices and reinstalling app. Only way to start a game is if I log out and play as a guest, then it works. Haven't been able to play a game using my account in three days now. Except for a couple of daily games were a friend invited me.

I have the same problem (or at least similar). When I try to start a new game it searches for an oponent but it never finds one. Use android app on phone /tablet. Tried two devices and reinstalling app. Only way to start a game is if I log out and play as a guest, then it works. Haven't been able to play a game using my account in three days now. Except for a couple of daily games were a friend invited me.
Try using the Custom Game option and explicitly set the rating ranges.
i have challenged many players and not recieved answers yet now when i click on new game my reply is that i have reached too many open seeks what now?/.?