True, the questions weren't difficult, but after I admitted I had used AngularJS, but not Angular, the interview basically ended.

The key in these questions is to cover the fundamentals, and be ready for the back-and-forth with the interviewer. Might be worth doing a mock interview with one of the Envoy or ex-Envoy Full Stack Web Developer experts on Prepfully? They give real-world practice and guidance, which is pretty helpful. prepfully.com/practice-interviews