I have participated at 80 contests and solved a good number of problems on CF. But I am nowhere near any improvement. I should have been CM a long time ago.

I know most of the typical algorithms and try harder problems like div2 D, E but none of them are helping much. I mostly have contest time weakness than offline problem solving.

Continuous failure is kind of killing me and letting me drown in frustrations. What should I do? I badly need a way out here.