@Rafael Perez Congrats on starting your journey so early on! My opinion is that doing a flip right now would be a little risky if you don't have reserves set aside. What if the rehab doesn't go as planned? What if it takes a long time to sell? What if it doesn't sell? These are questions you need to ask with every flip, but if you have reserves than you can whether the storm or have a different exit strategy. With no reserves, a flip seems a bit too risky for me for deal number one. You don't want your first deal to go south and then have that scare you away from investing in the future.
I'm all about getting started early, but sometimes it's better to hold off a bit until you're in a better position to jump in. I would say to take the next year or two to learn as much about investing as you can, network like crazy to build relationships, and save up as much money as you can. Even if it takes two years, you'd only be 22. That's still much earlier than most people start.
Hope this helps! Best of luck