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I totally agree with you, but I feel like with math theory there is always good chunk of knowledge that needs to be somehow inserted in your memory as is. That’s the most irritating part for me personally. If i find a way to overcome it or make it more accessible, I think I will enjoy math theory much much more. :)

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I'm afraid it's just practice. Lots and lots of solving problems until the definitions, methods, and techniques are burned into your mind.

Once you have the background knowledge, everything is a lot simpler. Learn whether each theorem has an easy proof or a hard proof. If it has an easy proof, you can forget it (deriving it when you need to; an example is the contraction mapping theorem [1]). If it has a hard proof, you can forget it and look it up when you need to.

[1]: https://www.patrickstevens.co.uk/how-to-discover-the-contrac...

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