To be fair, women also ask for free stuff sometimes when you tell them what you do. In fact, fake friends do that as they try to use you in some way as opposed to sincerely be interested in a friendship. But with the examples you gave, there’s an extra layer of inappropriate behaviour.
I usually blocked men who started asking me sexual questions without me hinting a that I would enjoy it. Their intentions are obvious. That’s unless you indicated on the app that you’re looking for casual sex, but I suspect that’s not the case.
I’d like to think there are men out there who are genuinely interested in your writing and dance skills, and who would ask you about those without inquiring about free stuff.