I was interviewed for an Account Manager role at Tiktok, the interviewers were nice, mainly asked about my previous experience and were interested in my professional skills. However, there is very little knowledge from HR who you will be interviewed with, what to prepare and etc, so each time you don't really know what to expect from the interview agenda and who will interview you. In additional, after passing 3 steps, if you don't pass to the 4th one you will just get a generic email from a robot without any details or feedback for a candidate who spent his time and efforts to be accepted. The lack of feedback and personal touch is very frustrating.