Some advice...
I've been coaching since I was 22. You have to PAY YOUR DUES. If that's volunteering a thousand hours a season, if it's coaching HS, being a GA, part-time, living off peanuts, working another job, whatever it takes if you really want to do it. Trust me a lot of people don't want to do that, what they want is something that they think it is that it is not.
You better be a good administrator, creative, understand budgets, dealing with diverse people, you better love the sport and you better be ready to sacrifice a lot of other things because if you are a good coach then you will invest a lot of yourself into many people and that takes time, mental, emotional and physical energy.
Lastly, do not get jaded by the system. Ask yourself why you want to coach, how you want to coach and what kind of people you want to coach? There's a big difference in being a talent manager and developing people.
There are a lot of things you will have no control over, politics will kick you in the arse and people will always have an opinion. If you can live with that, have thick skin and honestly give it your 100% best then you will land on your feet and someone somewhere will be fortunate to have you.
The road will not be easy...