I am so sorry. That is very frustrating. I know in this area, it is very hard to be a teacher as the market is flooded with people who want to teach in this school district. So...you better know someone or have some sort of in besides your credentials...which is not fair at all. That may be what happened in your situation.
That being said, it is obviously your passion! Don't give up on it. At my job the majority of people we have hired have been from candidates we have saved after interviewing someone and not giving them the job initially or the timing being wrong for whatever reason. No eye rolling!
Gentle hugs for you. If this was not the plan than that means God has another plan for you!
Blessings!