I don’t like to say that anything is very difficult but I think you will come up against a few problems. If you decide to follow the TEFL route, you will be in competition with native speaker EFL teachers, many of whom will have a university degree and at least a TEFL certificate. Whilst it wouldn’t be impossible to be a TEFL teacher, you would have difficulties getting a good job in a good school. You’re also considering teaching in countries like Germany, Poland, Czech Republic, Brazil or Argentina. In those countries you will be in competition with English native speaker teachers as well as German teachers of English, Polish teachers of English, etc. In those countries, you won’t have the advantage of being a native speaker of the language in question.
I think you are creating some difficult obstacles; everything is possible but you really need to give this some thought and do your research. Here are some questions for you to consider: Have you thought of teaching English in Panama? Do you really want to go into TEFL? Or would you consider teaching another topic? Have you thought of specialising in teaching flight attendants? That could be a niche for you to get started in. These are just some questions to get you thinking.
All the best,