Whatever your gender you should feel confident to teach students of any age.
I quickly learned that teaching very young learners requires a lot of energy but it also energizes you at the same time. I was pretty nervous about teaching five and six year old students but in the end I have found something which I really enjoy.
Some rules of the road
There are some businesses you’ll get into in Asia as a teacher where the best you can hope for is a good one year and then you leave either because the environment is just so toxic or because you are going to get burned out or maybe you’ll just get sick of living in a rural area.