Ask HN: How do you recover from repeated interview rejections?

I am in my mid 40s and for the past 2.5 years I have gone to numerous tech interviews. I have spent many many hours on sites like leetcode etc. and I typically do well in screening rounds but not so well in onsite rounds, leading to getting rejected.

The last rejection was particularly hard for me. In spite of my familiarity with the domain (finance) and being recommended by a senior member of the company and doing quite well in the initial rounds, I was rejected.

I feel extremely frustrated and depressed. It’s addictive to keep practicing these algorithms- but I feel at some point the strategy isn’t working. I have been at one company most of my career (although different groups with the company). That’s probably one of the reasons companies reject me.

Also want to add that I went to a mid-tier college in India. The college I went to does not reflect my abilities but I think that people tend to make judgements about you based on where you went to school.

What can I do to stand out?