I'd suggest looking into teaching English online while looking for something in your degree area, with the value of the USD vs Peso you would probably be earning more from part time online English teaching vs a traditional office job paid in pesos.
I second that teaching is a poor idea because you would have to firstly be good at it and secondly, pick up a large amount of students in a short amount of time. Considering how many people are already offering teaching, you are unlikely to just find an income within weeks or months.I do this for a living, and the market is just flooded with people trying to break into it right now. I have a TEFL cert from the University of Totonto, and over 6 years experience, and it's still tough. The number of openings is far exceeded by the number of desperate newcomers, many of whom have the idea that, "anybody can do it."
It's very much an employer's market, and the companies know it. So this is, in my opinion, a very poor suggestion.
If you want a second opinion, talk to user Vagrant Violet here on this board. She's been doing the EFL thing longer than I have, and is probably a better teacher than I'll ever be.
Then there are those that teach English to Chinese Students online..! Also to Saudi students ..!
Start doing that at home in the UK , find out about orgs. that do this..!
When you have a dozen students can move anywhere in the world
"Most" ESL Teachers on line are not worth their fee. They do very little if anything beyond a good FREE language partner.
Why pay for what is free?