Dream Tech Innovation interview questions

The recruiter told me that Dreamtec wants to see me to talk about an offer. When I arrived at their office, they told me that I will have to study up on data structures and algorithms for the 2nd interview, if I pass the 1st interview. Then the 1st interview was textbook junior-level questions. Candidates have to go into Dreamtec's offices, no remote interviews (even during Covid!!). It seems like all their staff is in the office. So for a senior developer position, they asked me junior type questions. The interviewer wasn't friendly or welcoming (probably because they can't work remotely).

It is was nice to talk with ruchit sir and also get some personal advice for my starting career. He also suggest me which language I should go for my long and secure career.