Lol.

A person who has supposedly "accidentaly" made over half a million dollars and not only openly discusses it on a forum but also and asks for advice, like a begginer who asks for advise on how to invest $200.

Are you part of some European royalty?

My advice. If you don't need that money, invest it in Bitcoin and forget about it for at least 4 years. If you are so nervous and have sold early, you probably need that money more than you think, and you shouldn't invest so much.