I played a lot of games and rating doesn't change.
Your rating doesnt change because you got a red mark on your profile :(
That means, that you have been banned for violating the ToS.
You dont see the red mark yourself, it is a shadowban - and you are being paired only against players who are banned as well.
No rated games possible.
Well, if you didnt use assistance, please read lichess.org/appeal and follow the instructions given there, dear @Helger!
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