Turkish Cabin Interior interview questions

My impressions: First of all, HR ghosted me after all rounds passed including reference checks. It was infuriating to say the least because I have given so much of my time with interviews, documents and so on, yet they don't respond to anything. The interview process is unnecessarily long. You're constantly meeting with people, but the questions aren't good, and honestly, the interviews are strange, as the organization seems unhealthy.

Any possible topic related to an aviation project past even as a hobby, university times if newly graduated and what kind of student you were, knowledge on aircraft electric systems, and possible certificates if exist