> get placed into a few interviews but not getting offers.
Sounds like converting interviews into offers is the problem. Being socially withdrawn probably makes that harder.
Have you considered meeting with a therapist/clinical social worker? Dealing with depression and mental issues is actually only one aspect of that job. Life coaching and developing social/interview skills is something they can do. It might be hard to take the first step, but find someone [0] and try it out. The first intake meeting might even be free.