A lot of times people get put on "cool down" after applying.
Apply to a job and even if you don't get a rejection letter, they may still say, "Let's put a pause on this guy for the next 6 months."
So if your resume didn't start out strong the first time, they may not even be looking at the revisions.
Similarly, if you're applying in the same city, in the same sort of work, don't be surprised if the HR teams have shared notes on prospects.
When I worked at an agency, we had one talent scout who was just head and shoulders better than any we had worked with.
I asked her what her secret was, "How are you able to find such consistently good developers?" and she said, "I get plugged in to the network, and I listen to my peers -- if they pass, I pass. Saves me time to go after better candidates."
Anyway I don't know if something like that is impacting your job search, but I'd try and diversify a bit. If you were a dev, look at Test Engineering, or DevOps, or Project Management work for a bit.
Remember you never have to list a job on your resume. It's always OK to say, "I took a sabbatical." And it's OK to shine rainbows on the truth, but it's never OK to outright lie. If you get caught doing that, you're burned -- to everyone in that network.
Anyway, if I had time off, I'd spend time on Udemy, and YouTube, and such. Just learning as much shit as I could.
I really want to get better at SketchUp so I can do more woodworking projects, but I haven't had time.
I have a billion things that need repairs, or modifications in my house, and it's always, "Sigh... I'll get around to it next weekend..."
And if you finish your little home project list, hit up your parents for things they need help with. Odds are, if they're elderly, they need a lot of help with tech and cleaning and even simple stuff like getting their oil changed can lead to old people getting ripped off these days. Anyway, if I had more time I'd want to take care of more of that sort of stuff for my mom...
I could be laid off tomorrow in this economy... so who knows.
Oh, also I feel like most companies are aware that salaries have plummeted in the last year. If you were making $200k in SF, and are asking that for a remote job... yeah, basic stuff like that can sink you. Make sure you are pricing yourself for the role.
EDIT: One last thing... I have seen a TON of people lately who are really shiftless. One guy literally said, "I only work remote because I don't ever want to wear pants again." And it's cute I guess, but it's not something you want to bring up in an interview. Make sure you don't come off as someone who got "laid off for cause." Keep your background clean when doing video calls and... put on some pants even if they can't see them! (=