How do I start out?

I’m currently 21 and I been working at a school for almost 2 years now but I realized I wanted to take my skills to the next level. I was always interested in business and I wanted to do real estate wholesale but in the town I live in there’s no point for it due to the amount of investors and real estate agents/firms. I was watching a show and someone was talking about how they closed million dollar deals and turns out they are a m&a broker. As I looked into it this is something I would like to pursue and see where it gets me. I’m extremely good at finance and I have experience in it as well same with stocks but little to few experience in sales. But I honestly have no clue how to dive into this field. I know nobody that does this and the state where I’m at the competition is low. I haven’t applied for any entry level positions due to the fact I’m still researching how to do deal sourcing, being a broker, and what M&A is before applying. I heard you need a real estate license but do you need a broker license or both? Also if I were to work at a firm or a place of brokers would they help me get one? Or should I finish college or a get a mentor? Would someone who is in this field kindly help me out.