Microsoft Senior Developer interview questions

Pre scheduled 4 interviews. One of them evaluates use of copilot in classic computer science tasks. Each stage starts with behavioral analysis and brief meeting part. One of them is purely human resource interview, all other ones are technical.

At first, I received an online algorithm task via hacker rank, one medium, one hard. Afterwards i had a quick chat with a recruiter. After passing these, i was scheduled 4 back top back interviews lasting for 45 minutes with 15 minutes pause. On all of these, you start by talking about your previous experience and afterwards there are practical/techical questions. The first one had OOP design, second was behavioral interview, third algorithm on HackerRank, the fourth was a system design. The technical questions were not that hard at all, i failed because i expected them to be much harder and my brain found complexity when there was none