How to earn money (small amount)

I would really like to know that how can one earn money with just internships or even freelancing?

I mean like if I know Full stack dev(MERN) then how can I use these skills to monetise myself. I have tried freelancing and everything but nothing seems to be working.

I just need a quick small way to earn money so please don’t suggest job bcz thats the long term path I know that.

Anything would be appreciated.