How do I find a mentor that has lots of experience doing this stuff?
Online and also in person.

Somebody who knows what they are doing for a long time now.
Do you think you can trust people in a decentralized market? They can easily send you fake information about him to scam your money and make false statements about the market.
I think in the stock market there are real trading advisers. They will use all their knowledge to help you. In the crypto market, I advise you not to trust anyone. because the way the market works is that no one knows its direction.