Goldman Sachs Software Developer interview questions

First, I completed coding assessment (all test cases passed). Then I got an invitation for technical interview round. I was asked 2 medium level leetcode questions. Need to explain optimal approach. Asked why this approach? What is time and space complexity of this approach? Unfortunetly, after a week, I got a rejection email of same common reason (Not proceeding with your candidacy at this time)

Medium leetcode style question. 2 ques in an hour or like 1.5 hours. The interviewer was guiding whenever i felt stuck. Few computer architecture questions. Few dbms ques were asked. Basic ones not very fancy.