TikTok Software Engineer interview questions

Very bad communications. After I passed the initial round, I was moved onto another round of interview. When I passed the second round of interview to move to "final round of interview", they did not respond for a month. When I sent couple emails to check on status as I had other interviews that I needed to finish and schedule along, I received no response. After about a month, they just informed me that I passed the last round but was put on hold due to their hiring and acquisition-related issues. After about another month after, I did 3rd round of interview with a hiring manager, I believe. The manager specifically told me to just stop explaining my thought process and algorithm and just write your code. I did well for the coding part but could not answer some of the questions he asked well. I got a feedback that they would like to interview one more time. I couldn't solve the problem given. I think it was one of the toughest problems. After such a long interview process, I just received an email telling me that I got rejected without any additional feedback. Afterwards, I received couple other recruiter emails from Tiktok and, then, was informed that they saw my previous history of interview and would not move forward when I scheduled the calls. In general, I could see that the culture is probably really bad at the company.