Bombed my microsoft interview

I applied for a senior software engineer position at microsoft. For context I have nearly 10 years of experience. I cleared the Coding test, DSA round, one tech round and the design round. In the final interview i met maybe the most rude interviewer of the microsoft. As soon as the interview started he quickly started bashing all my answer, belittling all my approaches. Saying even a fresher will come up with such solutions. He went on to question the credibility of my current company saying that you must not have joined it.

Feeling so low, all my leetcode and design interview grinding feels like a waste. Microsoft was a dream company for me, this was like the golden opportunity to make it true. But I failed.