If i'm doing childcare in college, how can I become a p.e teacher after this course?

I am 16 years old and I have not long left school, I have struggled to get into college as I was unsure what I wanted to do and didn't feel comfortable in the courses, I am currently doing Childcare as I seen it as the easy option but what I've always wanted to do is be a p.e teacher or assistant, but I don't know what route to take after this course to get there?