Hey there! Welcome to the art, and congrats on finding APK. This is a great place to start.
So, let's have a chat. Flips are pretty awesome, agreed? They look really impressive, and are an honest display of coordination and strength. Which means that you need both coordination and strength to perform them.
I don't know you, I don't know what your athletic background is, and I definitely don't know what you're capable of right now. So, I am unqualified to tell you (as is everyone else on the board) whether or not you are physically ready to start learning acrobatics. My best advice to you would be to find the nearest gymnastics gym, and speak with one of their coaches. They would be most qualified to judge where you should start, and teach you how to progress safely.
On another note, acrobatics aren't required to be a traceur. Some of the most talented traceurs I know only focus on flow and complex ground techniques, never taking to the air. Don't feel pressured to work tricks if you don't feel ready, you can still train Parkour effectively without them.