How do I attract potential costumers?

I am new to this selling thing. I was told by a friend if I want to make funds for my indie game, I should sell some of my game assets like sound effects and 3d models. So I uploaded some of the sfx, approved yesterday but no sales yet probably people did not see them yet. I’m studying best selling authors now.

gotta give it a couple of days. There millions of sound fx on here and many authors who are popular.

Yeah I know. I’m studying their content as of now. As for funding, I don’t want to start fund raising as it was like begging so I just sold my assets.