TikTok Interactive Engineer interview questions

Reached by a recruiter through LinkedIn. Process was so slow and it took the recruiter to reach out on every step after 2-3 weeks. Did initial interview with the recruiter and then I was supposed to present my last work to the hiring manager which I ended up presenting in front of 13 people. Nobody introduced him/herself. Took them 5 weeks to get back to me about the outcome and recruiter didn't bother to call, he just sent a message on LI.