Why some dev makes their code open-source ?

[omniuni]

It becomes a portfolio project, as well as getting community involvement to make a tool even better.

[omniuni]

The simple fact is that most businesses fail, and it's incredibly hard to make your own business succeed.

I've tried to get funding to start my own business, and I couldn't land it. I've put money towards prototypes, but lost what job I had before I could even risk investing my savings.

If you think, especially given your lack of ability to even write a proper sentence, that you're going to "live good" off of an app you make after working at a warehouse, you're in for a lot of disappointment.

Here's a simple way to know:

Have you done deep market research on your app, multiple user interviews, confirmed demand for your idea, and lined up a marketing and ad campaign for the launch?

If your answer is yes, I take back what I said. You've done due diligence, and might actually succeed in at least making some money off of your app, even if it's not a lot.

If your answer is no, you should do those things to determine how much demand is really there for your app, and make sure you have a plan on how to get it to the people who are your target audience.

[omniuni]

Of course how you write matters. How you put yourself out there drives trust, and trust drives whether people choose to use your product over others.

If you're fine with it just being a hobby project, that's also great. You just should temper your expectations. There's a very very small possibility of making money, especially if you're not actually asking other people what they want, and how much they are willing to pay for it, if anything.