Microsoft Software Development Engineer In Test SDET I interview questions

I am interviewing a long-term contracting position Microsoft through a vendor company. The 1st interview is a phone interview from hiring manager who explained the role well, and she asked a test question - how to test a soda can. The 2nd interview is 1-1 personal interview. The questions consists of basic coding questions and test questions. The interviewer is also interested in my personal career goal and passions.

I had initial phone interview and then 4 onsite interview. Process seemed simple to me. Each interview consisted of one programming question analyzing program. I looked simple but I did not receive offer don't know why and they don't share any feedback.