Woohoo, I love RSS. I feel this is a good a time as any to share Bubo RSS [0] by George Mandis, as well as my personal fork [1].
In essence, all it really is is a build script that reads your RSS feeds from a JSON file, and builds a static site as 1 HTML file and 1 CSS file. You can then run the script at whatever interval you want (basically however often you want to update your "feed"). I do this using Github Actions and publishing to Github Pages [2]. Anyway, its awesome and I've been doing this for a few years now.
In essence, all it really is is a build script that reads your RSS feeds from a JSON file, and builds a static site as 1 HTML file and 1 CSS file. You can then run the script at whatever interval you want (basically however often you want to update your "feed"). I do this using Github Actions and publishing to Github Pages [2]. Anyway, its awesome and I've been doing this for a few years now.
[0] https://github.com/georgemandis/bubo-rss
[1] https://github.com/kevinfiol/rss-reader
[2] https://kevinfiol.com/reader