arena problem

when i go arena i cant click that " find a match" button . idk reason maybe internet ? i have 75-105ms always ( using 4G )
and when i press that " select server " it finds match to me .. shows that player1 ready, player 2 ready ... (didint check name when started)



and in arena i cant see timer.. , i cant move after i die.



so my question is .. this happens bc internet lags/stops or idk what?
anybody else have that problem?
Sorry if my english is bad.