I can't go into game after champ select

I just started the game today but after champ select game not goes on the process. after 1sec of black screen, the client came up again and reconnect button available but it doesn't work no matter how many clicks I clicked. I saw lots of articles (?) communities that reporting having the same problem with me, and I tried every solution on the internet and used hextech repair tool to repatch and reinstall, but still not working. plz fix this problem and let me play I am so mad now but I am reporting this bug, trying to stay calm. I need your help ASAP. I don't know how to upload pictures but I captured my situations.
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