You have jumped way ahead in math. This does not always go well.
The thing about math: What you are learning now is largely based on what you should have been learning last year and the year before. What you will learn next year is going to be based on what you are learning now, as well as what you learned last year and the year before. Math builds on itself, and they builds on itself again, and again, and again. It pays to learn each step very solidly before you go on to the next step.
I did not get to calculus until I was a freshman in university. That did not stop me from getting a bachelor’s degree in math from MIT, and a master’s degree in a subfield of applied math from Stanford. What I was learning as a graduate student was way, way, way past anything that I could have handled at the point that I arrived on campus at MIT. That is just the way that math goes.
You might want to talk to your teacher at high school regarding what the best way to get back on track. You do not need to be this far ahead.