I don't think there's a good way to enter these fields, you need connections that are simply sealed to the common man. As for this stuff itself, well...
There are few things I loathe more than the concept of the money juggling professions and their extremely lucrative results for the self which not only create zero value for society, but often taken away from it. It's like politics; you can't actually be a good person and excel at it. You need to be cutthroat and see people as obstacles.
crypto is more of a random topic than 2D/meta
why even do invest when you can keep money in the bank and have it grow
Because it won't grow as much.
The interest is you earn is lower than inflation. Investing will at least keep pace with it.
I've thought about it, and investing in investing is probably one of the more worthwhile things a somewhat knowledgeable NEET could do. Since if you become good at it, you won't have to go out and search for work or even need to really interact with others all too much. It's the nicest 'job' I could think of doing, aside from the fact you risk losing money instead of making it.