Have you ever been successful? I am curious about those who are extremely dedicated to this field. It seems like it is hard to actually be successful in this field unless you have some partial information that can help you. There is also the question of whether this is unethical because you are gaining access to coins that are not yours. It might be considered hacking, is it not?
There was definitely success, but with a small amount of funds, say up to $80, the terms are different, it happened that you could find something in a day, and it happened in a week. About ethics, morality and law - the one who has the private key is rightfully considered the owner of the funds. Looking for owners is like a needle in a haystack and there are many scammers among those who allegedly own these funds. As for the legality specifically - the funds were obtained through social engineering, the withdrawal should be made through official exchanges and a declaration of income received through social engineering should be made - the income is declared, the tax is paid, there are no problems.