For starters, getting treated for my depression and anxiety was a huge help. One of the symptoms of depression is losing interest in things you used to find enjoyable, and for me that was video games. After I started going to therapy and taking an SSRI, I got back into video games not by playing the same games I was, but instead I played KOTOR II on my Switch. I hadn’t played that game in forever, but found it really enjoyable to just jump back in.
Personally, I think one of the worst things you can do when finding yourself in a gaming rut is to play repetitive grind games like Call of Duty or Destiny or the like.
Another thing I do is limit the amount I play, but this is more involuntary than not due to kids’ activities and whatnot. Right now I’m playing Jedi Survivor when I can, but mostly I’m watching my 6 year old daughter play Roblox and help her out when she gets stuck.
For me, it’s not image viewers, but websites that take photo uploads. None of them that I’ve ever used have supported webp, so I always have to convert to png or jpg.