TikTok Software Engineer, Backend interview questions

Coding problem. Usually one or two Leetcode medium problem. Your can choose the programming language your like. Then there will be 2 - 3 BQ questions. Like tell me about your self. What is your most proud accumplishment.

Applied online, recruiter reached out for availability and scheduled first 2 rounds. Informed me that 2nd interview would be dependent on the 1st interview. Then my recuiter left tik tok and my case was assigned to someone else. I think the new recruiter shifted my calls by mistake and some confusion happened, which tagged me as "Candidate No Show". I wrote multiple emails to clarify and my interviews were rescheduled. Kind of frustrating, 1st interview happened and it went very well! I was very confident in explaining my projects and completed my coding question well ahead in time and gave correct TC and SC. Then later received an email that you have been rejected, but the invite to second interview was not canceled like it did earlier. So I still showed up prepared and no interviewer came, then i emailed my recruiter and they told me, team decided to go with another candidate without any feedback