Am I just Unlucky? L3 Google Phone screen interview

I just did my phone screen interview for Google L3, and it feels like I'm the only one that got a really hard geometry problem for this interview which I was only able to optimize the solution once an

I just did my phone screen interview for Google L3, and it feels like I'm the only one that got a really hard geometry problem for this interview which I was only able to optimize the solution once and couldn't figure out the most optimal solution (which is only 1 more optimization). I was going in the right way with a hint from the interviewer but after like 2 minutes of thinking the interviewer just said to keep this point and proceed with coding the second most optimal solution. I think i only got like 10 mins of thinking before he asked me to start coding, the code was fine although the interviewer had to again give me one example which had me change one variable type. I'm honestly not feeling I did good and lost hope, I practiced a lot of DSA and could confidently handle DP, Graphs, Trees, and a lot more topics but the last thing I expected was an extra hard geometry problem for an L3 phone screen interview.