Before this discussion starts between how the interview process sucks. Here is my 2 cents:

1. Pick up leetcode (or whatever rocks ur boat).

2. Do a lot easy questions and understand the pattern.

3. Do medium level questions and understand the pattern.

4 If you are aiming for Big 4 do Hard.

Coding interviews is all about finding the pattern and applying it. Only way to be good at it is practice. Don't give interviews without some practice.