|I have to confess that this is not a review, but instead a reply to your work.
Perhaps the way to view this, is that with a secure job, you have the ability to resource your creative side. You may think that you have no time for your chosen art(s), but this is probably not the case. If your life seems too busy to find time for art, then examine it closely. You don't work all the time, so sacrifice something else that you do in your leisure time, and do art instead. Even a half hour a day would add up over time.
Do the art because you love doing it, not as an alternative to your work. Making money from your art is of course possible, but I would suggest, only if you are truly passionate about what you do will this be possible. If you do it because you love it, that will show, and if you regularly spend time on your art, it will develop and get better and better as you become more skilled.
There are lots of platforms for people to share their art, and of course lots of people doing just that. Most of them perhaps are secretly hoping for the big break, but a better aim is to do something because of the satisfaction that it gives you personally.
Can you devote all your time to your art? It is possible, but it isn't necessary to do so to get started. Build your skills, hone your talent, more importantly ENJOY what you do. The satisfaction comes from making something wonderful that you are proud of. Anything else will follow from this.
Sad to say - if you want to spend all your time on art, this is work. You need to research all the possible markets, you need to know how potential buyers decide who to buy from. You need of course something worth selling. You need to know how to sell what you produce.
I'm not trying to put you off at all. Only if you put all your effort into your art could you make a living from it. My point is - don't expect to go from nothing to that all in one go. It isn't likely to happen. Spend as much free time as you can on your art,in all aspects - i.e. don't neglect to research the market as well. But mainly get all the satisfaction that you can by being the artist you want to be.