Unfortunately, RAV's observations match my own. Admittedly, I'm an outsider who has done only fairly minimal paid pixel work, as it's not my "main" thing. Take my post with a grain of salt.
As far as I'm aware, there aren't any major companies consistently creating pixel art games, so there aren't stable jobs in it. It's nearly all freelance (including for larger companies) and indie dev companies, both of which mean inconsistent work, and sometimes inconsistent pay even when there is work (e.g. many indies are unable to pay their artists ahead of release and resort to revenue sharing). Major, big-budget pixel art projects do happen, but you'll have a lot of competition for those positions.
If your goal is a stable job for a company, you'd have more luck marketing yourself with a more diverse skill set than just pixel art. Being able to do concept art, textures, UI design, etc will make you much more desirable for a company, especially since most companies making pixel art games aren't big enough to hire multiple specialists and instead want one or two generalists. The downside is a lot of your work will involve not doing pixel art - but perhaps you'll enjoy those things too! Fortunately, it doesn't hurt to try learning more skills, because they will likely improve your pixel art as well.