My advice, is to stop treating the interview like an Q & A session.
What I did before, but didn't work, was I was trying to anticipate what questions they were going to ask and try to form an answer which I memorized. But the result was I sounded like a robot.
I basically said F$&@ this. I started treating the interview like a casual conversation and spin what was on my resume and experience into what they wanted to hear. Basically, I turned into a politician and was more relaxed.
Whatever the conversation lead, I just went with it. I once knew someone who gave me this advice. “The worst thing they can do is send you home.” If they like you great if not move on to the next interview.
I once had an interview with a green and renewal energy company. During the interview, the conversation turn to talking about Elon Musk and about Solar panels in space. I got invited to a work interview but didn't get the job. It seem like the interviewer was impressed with my knowledge and my energy. And this was for an AP position.
The only thing I memorized was what was on my resume, the organization information, and the interviewers profile info if you can find it like on LinkedIn because if they ask you should be able to answer these related questions right away. One thing that will impress the interviewers the most is if you know about your interviewers background using LinkedIn. I was able to do this because I knew the leadership team of the company I was interviewing for.
When I started treating the interview like conversations which includes Skype or phone interview, I started getting call backs for 2nd and 3rd interviews.
This worked for me but it might not for someone else.