If you find it too tedious to self-study on your own (there are books for this purpose), then you can consider taking a trig or calc course at a local community college. Just think of it as a temporary hobby.

Or go for one of these gamified math tutorials.

For instance: this one teaches geometric proofs without mentioning the formalism, just letting you "unlock" the tools from a few "axiom" starter tools.

https://www.euclidea.xyz/

Wtf this is awesome! This should be better publicized. Thank you!!

This is very nicely done. I run a training group and I will use this for my students. Thank you for posting this resource.

I feel for you.

I stopped after discrete math and analysis-lite class but I wish I took more algorithm and higher level math classes to be better at my craft. It's also hard to take classes when you have competing priorities when you're 30+. I don't know your current situation but I feel like you can totally do it since you have renewed determination for learning.

I consider the whole math educational curriculum a waste of time because no math teacher or textbook ever taught me WTF math is supposed to mean. There was an absolute lack of context to basically everything beyond very basic arithmetic, and I ended up hating math.

It was only when I got into programming and it taught me math is actually much more than just meaningless letters and numbers that I finally came around to appreciating it. Programming taught me math is the language spoken by the universe, anything in this universe could be explained with math and it was truly a mindblowing paradigm shift.

Math education needs a complete redo from the ground up, it teaches nothing of value and only serves to mass-produce math-haters to the detriment of us all.