22k USD is far too low for a good developer. I’ve met a few developers from Eastern European countries that charge $100+ USD per hour.
You will always be able to find work at ~$70 per hour if you join TopTal. It should be easy to book projects for 30 hours per week and earn $100k USD per year. (Or you can work 6 hours per week to make $22k, if that’s all you need.)
That’s still on the low end for web/mobile dev. Top developers will charge 2x or 3x that amount (but you won’t find that work on Toptal.)
Full-time salaries will be lower than contract work, but it shouldn’t be difficult to find a remote web/mobile development job that pays $80k. (And that’s still very low for a good developer.)