If relevant you can use an RSS reader* to subscribe to specific communities, for example https://kbin.social/rss?magazine=kbinMeta (there's an RSS button in the bottom right of every page, next to the theme/lightbulb icon)

I've also suggested RSS feeds for DMs/reports/etc., hopefully this will be added some time

*I use Feedbro on Firefox

I use Feedbro for Firefox (also available for Chrome). It allows you to filter out items based on their content (supports regex), highlight keywords when viewing items, get desktop notifications for new items in specific feeds, and more.

Found that it was already suggested :) (and I gave it a like)

@DreamerEight