Might I recommend that you get assessed by a mental health professional? You could have a condition that can be treated by drugs to even out your swings (I’m not a doctor but bipolar affective disorder is characterized by swings of enthusiasm/effectiveness and depression)

If there’s something you like and are good at there’s no reason your schooling can’t focus on that area. (I don’t know how school works in your country but here you can switch your major in between class terms, finish out this term, meet professors in the comp sci department, ask to switch)

This is a weird (hard) time to be getting into software. It is basically impossible to break in because there are so many experienced people available. Some people break in by contributing to open source projects (sometimes contributing to something that you really like that has a paid version and then building connections and trust to that company)

It’s going to take a while. I recommend not being homeless while that’s happening.

Take a step back for a second, take a deep breath, and think about where you want to be in 5 years. Make a list of things you want and where you want to be. Include at least 10 items on that list. Do actual research into what it will take to achieve those goals. Pick your top 3 and act on them today, right now. I can't tell you if you should go to college, I don't know you. I can tell you there are a lot of resources out there for software engineers that didn't go to college. If you have skills then you can build a portfolio and start applying.

You have a clearly demonstrated track record of failure. Why would anyone hire you over spending money on tokens for coders with a positive track record? This is not just a rhetorical question. Justify why anyone would hire you at this point.