Not kidding - How do we know you are not the hacker ?
In future please use 2F authentication otherwise there is really no way for anyone to tell who is the right owner.
We don't. But we can assume that they aren't for the purpose of discussion. It seems more likely that a victim would post the OP's post than a perpetrator.
Google also doesn't, but they can say with increased confidence what the probability of the OP being a victim is.
But there's an even hard problem: say person A sells their Google account to person B, and does this with completely offline communications (offline wrt Google). To Google, this situation may look no different than a stolen account, at least for some period of time. But person A is a scammer, claims their account was stolen, and attempts to initiate a recovery process with Google.
This situation is the reason I virtually never perform account recoveries for players of my games. I also require users to use a third party login (like Google or Facebook) for their account, because I want as little to do with account management as possible.
I think usually it's obvious for someone who can see the account's recent activity. You can also design challenge-response type questions for the person claiming the account, that only they could know, within some reasonable confidence interval.
0460 [## ## ##] and had Belgian flag so that must be Google saving country code that way.