Comment by codeful

check out Hania Uscka-Wehlou (Phd) on Udemy. She teaches mathematics and problem solving the proper way. From the beginning.

Her precalc is ~200h and she goes the rigorous path, by proving things.

She is multiple times awarded by universities for her skills in teaching and you will understand why.

Course is exeptionelly well organized, quality of presentation is... 11/10? Coupon codes are in lecture materials.

Just start with precalc 1. I believe that after a while the path will emerge for you by itself

Edit: combine with professorLeonard on Youtube if you need some practice by computing.

Welcome to the joy of mathematics!