Failed to connect to the game

Its happened to me after unniversary update 1903 and sometimes I can actually start the game, first thing I do after launching the client trying to go in training mode, and now 3 days passed and still cannot play. Same message ,,failed to connect'', tried reinstalling game, disabling firewall, my antivirus, deleting logs and config, nothing. Tried to play on different region, same problem only for league of legends it says im offline but im freely using internet while trying to enter the game which actually says im offline. But im not.. riot what have you done, please fix this nosense bug, it annoys me to the core cant play for 3 days rn ;C here is how it looks, I think most people know it I need help if anyone know how to fix it please post it down below.
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