Sounds like you were confused. For example, I know people like stuff like the 3blue1brown movies, but my intro linear algebra textbook from undergrad covers literally all the materials and movations he did if you bothered to read it.
Yes, this. Not all textbooks are worth anything, to be sure, but decent "boring" math texts generally have all of the "easily digestible" stuff that youtube videos do, sans animation. Math really took off for me when I started going passed the required problem sets and doing the interesting ones that weren't assigned. Really digging into them and drawing pictures, etc. Math is a contact sport.