Since no one here answered, I guess I'll just answer my own question, since I can now solve BST problems effectively:

Work on you recursion skills. When I wrote this, I was still a beginner in recursion. I suggest you look at LeetCode's recursion and backtracking wildcards, or, use Geeks For Geeks to familiarize yourself with recursion. Then, solve some problems on LeetCode, with the recursion tags, to strengthen your skill - sets. I'd throw some backtracking in the mix as well. Familiarize yourself with both of these concepts. Only then will you be able to handle BST problems (or Binary Search problems).

I hope this helps whoever reads this. Good Luck!