For the record, I'm no professional. so please take everything I say with a grain of salt. I likely originally got your games as part of a bundle or from the subreddit r/freegamefindings because I'm a digital hoarder.
I saw your emails just now and it really hit me hard. This is a tough life and path we choose. I understand if you need to stop gamedev permanently or temporarily. No judgement there, everyone has their own path they need to take.
Just from the itch.io pages and screenshots, this is your best-looking game so far. It has a proper logo and more cohesive looking screenshots. I'll see if I get around to playing them later, but lately I've been avoiding FPSes due to my hand problems. When it comes to "first impression" sales, I think it's mainly about how it looks on the storefront if you aren't running any ad campaigns and all that.
There is a bit of an issue where several of your older games just frankly don't have a great thumbnail. Being 3D and likely store bought assets, they seem like products I'd normally not buy.
I'd perhaps bundle your older entries into one itch page with a big ol zip file and call it "Wenudu's retro collection" or "early days" or something, just to clean up the store page and ensure your best and most recent stuff is what shows up first.
I'm assuming this entry is your latest, as it looks the best as a complete project.
I just want to say that it's heartening to see your improvement with each game's storepage. So likely, you'd have to keep making more games, but there seems to be a pattern of improvement over time.
Don't forget that you've released 7 games on itch. You already have me and so many other game developer wannabes beat! There's pride to be taken in having put yourself and your work out there like you have.
If you still have it in you to get back on the gamedev wagon after you've settled the more difficult external factors in your life, you have a major head start on other folks starting out. I hope things will go for the better in time.