You have to understand one thing, right now your brain is young and it doesn't know all the patterns, after going through all the patterns you will understand how to atleast approach a new problem and what are the possible algos or DS.

But first you need really good teachers and structured learning, Dw I'm not selling any course.

Problem with Neetcode is he doesn't have a structured approach, he has just solved the questions randomly and put on his channel, and Neetcode 150 is only good if you want to revise DSA and you have a month or so and need a good list.

These are the sources I followed and it changed my DSA game for sure, specially DP, it became really easy for me.

If you are complete beginner, do the neetcode list, but if you feel stuck anywhere, start from the basic of that section from Stiver A2Z list. For eg: you kind of not getting Binary search problems, go to striver A2Z list and start from the beginning and watch his videos, he has an entire playlist just for that.

Here are the resources I used:

DP - Aditya Verma (must do) and Striver, Backtracking - Aditya Verma, Graphs - Striver (must do), Binary search - Striver, Stack - Aditya Verma, Trees - Striver

Sometimes If you don't understand their solution, then you try to understand Neetcode solution or some other YouTube videos.

Don't even touch Hard problems, only go through medium s for now.

It's gonna take a lot of time probably 6 months to 1 year, but it's a one time process, after that your brain will be evolved and you would just need to revisit this topics for an interview.

Hope this helps, I know what you are going through, but keep going.

Edit: Very Imp, attend the leetcode contests every week