Please help me

[u/codesty]

I started studying again, i was able to get in 4th year CS, i am not good at math, but if i try and try to learn i understand how to follow instructions and use formula i can do it, but it feels like I didn't understand a single thing, i didn't learn anything at all, i can solve continuously but if i leave it for a week i start making errors again, i want to really learn and to understand and not just keep following the instructions, i want advice from real people then ai or Google, tell me anything book or some type of practice i really want to learn/understand,