I did not got clan chest

Did you leave during the clan chest event? Did someone else log in and opened the chest for you? If you leave/are kicked and then join back, you won't be able to collect the chest. BTW you ranking 20 or 50 doesn't mean anything. You just need 1 crown to get the chest in the end, not saying you should do that
And I am only using this account I have not shared anyone my GmailThis is weird problem with my account
Because this is not just once it occurred twice

I didn't find the right solution from the Internet.

References:
https://forum.supercell.com/showthread.php/1572727-I-did-not-got-clan-ch...

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