In the past few years I've gone through some not by choice unemployment - I quit working b/c y son got sick and then took a while to get a new job.
For me, one of the big things about not working is that you don't really have a "role" everyday. If you are retired or a stay at home parent, that is a role, but when it is a temporary thing like what you are doing, it doesn't make a lot of sense to start retirement things like a volunteer gig or shoot off on a vacation. I found myself lacking accomplishments, feeling lost, lacking purpose. One thing that helped is to have a project. Something that I could work on and accomplish a task. Mine were mostly house related - cleaning out the garage, decluttering the attic, painting basement, organizing paperwork, etc. Having a goal and working on it on a regular basis to accomplish said goal helped me. I also did well having a loose schedule.
Starting a new hobby that doesn't costs much money would be good too or even reading more books or catching up on old movies.
When I was able to go back to work, I told everyone I know I was looking for a job - announced on FB, emails, book club, neighbors, etc. I got a lot of leads from people I am hardly in touch with. My current job is from my husband's friend. I am the only person he interviewed. He only reached out to me after getting an email from me announcing to everyone I was looking for a job.
Some parts of the job search process I found discouraging - mostly looking through listings on Indeed or other job search boards. So I limited that to twice per week - Tues and Friday. I spent the other days sending out resumes and applying.
Good Luck