Lots of companies are a mess internally. If in 2-3 weeks you haven't heard from the recruiter, you should ping them back, if no response don't was further time

Lots of companies are a mess internally. If in 2-3 weeks you haven't heard from the recruiter, you should ping them back, if no response don't was further time and move along. Interviews often seem like hit and miss. I would recommend training at geeksforgeeks.org just to refresh dynamic programming, etc. But beyond that you're better off applying multiple places.