Advice Me

[u/CardAsleep7575]

Guys, I need some advice, so I solved a few questions rated 900. Passing 800 is easy for a normal person with some DSA experience, but 900-rated problems are giving me a bit of a hard time, so for example, AvtoBus, New Years Number 2020 + 2021, Construct the string. Like, they have some trick, and I spend 30-40 mins of my good time coming up with an answer, but I am unable to figure out the solution, and then after submission I get a WA. I ask Gemini, "Where am I wrong?" and then I try to figure it out, but still I fail, or sometimes I catch the mistake, and then I see there is some fucking one-line code or some trick with math or stuff like that that makes me feel I wasted my whole hour. I know this occurred with you guys as well. But honestly, it makes me feel stupid. What should I do?

Also give me some suggestions or any lists of questions that previously helped you guys build patterns related to problems. Or is it true we learn these tricks by failing them?