East West Commercial Real Estate

I’ve read a lot of BS online about it. I’ve known several people that are rich doing it. However, I’m really confused about how this business works. Right now, it seems to me like you have to already have a lot of money or real estate to make it in commercial real estate. Those prime locations and huge building are really expensive. I don’t have a lot of startup money and I don’t want to risk much of what I do have. Is it possible to startup small in this business? If so, how? TIA for any help!