I find it interesting that someone with a BA in mathematical economics, who is also bilingual and knows how to program, can’t find full-time work above minimum wage. That’s so…odd to me. I mean, STEM degrees are by no means a golden ticket to high-paying work, but quantitative skills are typically in high demand. (Then again, my veteran husband with an Ivy League statistics degree took 7 months to find employment in a booming market.)
I wouldn’t go back and get ANY degree unless you had a clear plan for what you wanted to do with that degree and how it was going to help your career prospects. That’s particularly true with the MA in math, which isn’t a professional degree and doesn’t lead directly to any kind of specific work, like an electrical engineering degree (theoretically) does.