[bomdo]

Culture is what is there when you subtract work and manager. Defining a "good" culture depends on your personal work style, role, experience and general life priorities.

Interviews are much more of an art than science and asking good questions is hard. In general, they should be open-ended and get people out of their comfort zone to avoid canned answers. At the same time it's an interview, so you will want to leave on a positive note.

My advice would be to think of what is important to you at work. Then research about the company (maybe also by talking to current/past employees). In the interview, carefully probe for any red flags to confirm your suspicions. Personally, I'd go for things like work/life balance, WFH and career progression due to Covid, but that's very much up to you.