I was doing the "mission" style where they give you almost random tasks, and then you do mastery challenges... I feel like that got me a good into understanding a bunch of trig, matrix, and vector things that I hadn't understood before.
However, I just wrapped up my precalc with that and decided to move on because the last couple of topics were boring and they kept sending me mastery challenges of tedious stuff.
So for the calc I switched from the missions style to the lesson style because it feels more directed and "completist", and I've just been doing lectures and exercises. In the last couple of days I've gotten about half way through the material on limits.
When I finish the calc, then I will do the statistics, and the multivariate calculus. At that point, I think that I will be ready to move into college level classes online for linear and whatever else I think I want.
My larger interests are on one hand machine learning and AI and on the other hand, audio electronics for music... my math skills have held me back in electronics and I feel like if I am going to find anything useful in applying
My life got a lot better when I just committed to doing certain things every day (yoga and making my bed, for instance). So I just added "study" to those things.
Another pro tip-- have kids when you're 23... I'm 40 and now they are mostly grown so I have a lot of free time LOL An hour of yoga a day is a lot less of a commitment than it would have been when I was 28, had two small kids, and was in grad school.
That's a joke, but the kernel of truth in it is: you don't have to learn everything now. With luck you will live to be 70+ years old and so the benefit of even 15-20 a day of study really adds up over several decades.