Microsoft Software Developer interview questions

Heard back roughly a month after applying. Their process was: 1. Screening call with recruiter (behavioural) 2. Hiring manager call (technical) 3. 1 day onsite with 8 interviews, including a 1 hour presentation about myself. 4. 1 day onsite for a trial project. I completed steps 1-2 and the interviewers were friendly. However, when I found out that they wanted me to take 2 days off + effectively 1 extra day for preparation, I declined to proceed. The team they were hiring for was very senior and working on one of MS's most popular products, so I understand that they wanted to be selective, but to me this felt excessive.

Very difficult needs lots of study on algorithms. Study leetcome DSA OOP and lots of more . They asked for no experience but they expected more from me what should I have done. It was very difficult