Teaching Lessons

Good afternoon folks of r/trombone!

I need some help. I am looking to teach lessons in Boston and have no idea how to start. I reached out to a bunch of high schools (a dozen or so) offering to teach lessons with not a single response. I’m even offering a free lesson to anyone interested with no one wanting one. I’m also willing to do online lessons, but I’m just not sure how to get my name out there. Any teachers in here I would really appreciate suggestions.

Many thanks.