i've practiced a lot of problems about greedy/constructive/implement/math,but still feel tough when facing a new problem with these tags.

i find practicing these tags makes me frastrated because i cant get feedback,like"i ve practice this tag a lot,so i can solve them easily".i can get such feedback in other tags like some specific algorithms or data structures,but cant find it in greedy/constructive/math

should i skip these tags and try other tags instead? or keep on them until conquer it?