Will the bitcoin are gone forever or there is a way to recover them?
This is totally bad if your wallet already get someone because they are already trying to changeing every info.so hope it will never recover back again.so trying to creating new for your future target.
And i don't think there's anyway to recover lost wallets. That's one downside of btc being unregulated. So you have to be really cautious since most of the time, it's human mistake that causes someone to lose their wallets.