Do you have your real information registered on the account?
Like your name and phone number on your Google account, and maybe card details and address on your Google Pay?
If yes then I can help you getting back the account, my account was hacked and I had the same issue as you before.
The process took about 1 month, but I was able to get my account back in the end.
You can contact me by TG - BETLL01, I can show you the proof if needed.