There is a tablet Huawei AGS-W09, which I have not used for a while. I have restored it to factory default. When it starts, it asks for the Google credentials that were used in it; this is probably an anti-theft mechanism.
I provide the Google username and password, but then it requires phone verification. I know the phone number, but it does not exist anymore, since I did not add credit to it for years. Even with a PC, the same thing, I cannot log in to this Google account, because it asks for phone verification. If I ask Google to recover my account, it just asks for "the last password I remember", I enter the current password, and then says they cannot help.
Is there any way to recover the Google account and/or the tablet?