I have (or better said, had, until it broke) a Nikon Coolpix camera. Point and shoot, it made good images under daylight conditions. I never played with in-camera effects - nor do I with any of my other cameras. For that, I use Photoshop. I got the CS 2 version, which is not supported anymore by Adobe, but I also got it for nothing, free download. Just google "Adobe CS2 free download" and find a suitable site (but be careful about scam sites, I have Norton Security pre-check my searches). There is so much more you can do in Photoshop, even though I had Photoshop for long time (a previous version, Adobe 7, went to file heaven with a crashed hard drive), I have not even explored all possibilities with the various filters and program settings.
What you finally came up with works pretty good. Maybe try making AI variations in Dream Wombo and/or Deep Dream. A combination of the two works pretty good as well. As for Dream Wombo, you get a additional feature on your phone, which is not available on the PC version, and that is you can upload your own artwork (or photo) to influence the outcome, settings would be from shallow, to medium to strong. What works best when you do that are more simple images with strong contrasts. If you check my previous posts, I have several that deal with that.
Cheers
Otto