I knew many expats there with no college education, teaching for a mere 16 hours a week. They were given housing as part of their contracts and they earned enough to eat out every meal of the weeks if they so desired.
With just 16 hours of work per week, you have plenty of time to learn a new skill and better yourself.
Being a native English speaker is one of the greatest privileges one can have in this world. It's usually a foundational skill for succeeding in many of the best jobs in the World.