It probably makes more sense to host your novel somewhere else and post links to it chapter by chapter.
I'd suggest doing one of the following:
- Host the images on a site that already supports image galleries and link to that. Most image hosts are kind of annoying, but this is an understandable way to do it if you don't want to run a website. (Maybe someone can chime in with a suggestion for whatever they think is the least annoying image gallery host in 2023.)
- Host the images yourself on a simple website. Webcomic artists have been doing that for many years, so there are lots of examples to draw from. (e.g. Gunnerkrigg Court)
- Zip the images up chapter by chapter and either self-host the zip or toss it on a file host like catbox.moe. If you structure it as a .cbz (i.e. zip up a folder with the images named in order like 1.jpg, 2.jpg, 3.jpg, ... and just change the extension from .zip to .cbz) then a number of document viewers (like evince) can be used to view the image sequence -- or people can just unpack the images and use their favorite image viewer on their computer.