I guess if you do bug bounties then yeah it can pay a decent amount for side-income. But generally if you’re just planning to create software, it needs to be software that people think is worth the price tag you put on it and it needs to be something people will use that has longevity. Otherwise it’s not gonna do much as a side hustle. I could be wrong though because I’ve never been exposed to the freelance side of things, this is my career.