The big problem with self-publishing is that it does not improve the quality of your work. With rare exception, good writing gets published. If you have no takers, there's a reason.
And, honestly, you haven't given writing a chance. First novels are almost always lousy. So are most second, third, and fourth novels. They remain lousy when self-published, and this is why self-publishing has a bad name.
Despite all claims to the contrary, pretty much all self-publishing is still, and always will be, vanity publishing.
Which does not mean every self-published novel is bad. Some are wonderful. Some few self-published writers will make a fortune, those most who do will have a solid track record with commercial publishers first. Not all but most.
But the tiny bit of wonderful self-published fiction is often buried under the stigma of the mountains of complete garbage shoved out there yearly. If you really are good, and can break free of this, self-publishing can make a career.
But jump into it before you're ready, with bad writing, and you're doing yourself great harm.
Too many want to be professional with a first work. In what other career would you expect to be as good as professional with a first work? It often takes years, it often takes great effort, it often takes numerous novels, and it often takes hundreds or even thousands of rejections before a writer reaches the top level.