Facebook 2 Factor Authentication problem - Have 2FA code but doesn't work
Recently I received an email from facebook saying that someone tried to access my account, so they locked it and now I cant access my account (especially my page which is the one I really need), because even though I'm entering my 2FA code from google, it says that it isn't the code sent to my phone. (I'm using the same phone I've used since forever.)
Does anyone know how do I recover this account? I really need to recover it as it is the main source of income used for my college tuition...
If it helps, I have access to my account centre through Instagram and I've tried to to access the 2FA settings of my facebook account through there to change the 2FA from google to SMS but I'm encountering an error saying "You cannot make this change at the moment, This is because we noticed you are using a device you don't usually use..." (Even though, I'm using the same phone I've used since forever.) Also Ive already tried submitting an ID and Face Verification but it was rejected (Maybe it is because I do not use that facebook account and doesn't have any corresponding information, I only use when accessing the facebook account.)
Alternatively, if anyone knows a way to somehow access the facebook page without the facebook account, like using the Instagram account or smth it would greatly help.