I solved 3 questions in March Long Two 2022, Division 4 (Rated) but my rating decreases why?

I solved 3 questions in March Long Two 2022, Division 4 (Rated) but my rating decreases why?

Your global rank in the Div 4 contest is 8,038 out of about 11,000 participants. I think that the rating change does not depend on the number of problems solved only, but also on the relative rank in the contest.

Best wishes in future contests.