FAANG interviews have been gamified to death at this point. Trying to solve the question at the spot is a losing battle. Your best bet for FAANG coding interviews is to just practice leetcode and after a point you'll be able to find patterns and reproduce solutions in reasonable time.
To get a perspective on this: think from the perspective of a FAANG interviewer. Say, they are 3 years out of college and have been asked to take an interview. Do you really think they'll be cooking up fresh new interview questions or just going on leetcode and picking their fav question so that they can get done with the interview and get back to their sprint deadline?
> So how do I get to faang or other company with comparable benefits if their all interviews seem to be heavily biased towards quick
Their interviews are biased towards prep and not much thinking imo.