Guys, need opinion!

I am an indie dev, a student (still in school), trying to think of ways to earn with just my laptop, internet, and programming skills, any ways as part of my journey I have developed several apps, now as an indie creator with practically no capital, and just reddit and facebook for marketing, should one explore this world of selling apps, your opinion and tips are highly valued so please do comment

P.S I have linked the types of apps I have that I could set up of sale, if you have any feedback on it, do tell https://muhammadj.gumroad.com/l/wifipassfinder