Darknetlive is a site about .onion websites with news and has a directory of popular onion sites.

Ahmia is a search engine of onion sites.

Brave search is the onion link to the clearnet search engine.

Proton Mail

Those sites should give you a start. In general, I think that it's stupid to try to use Tor for illegal stuff. You're likely to get ripped off or arrested. I limit my Tor use to spicy shit posting opinions that the regime doesn't like.