You can follow communities from the Mastodon app, but the experience will be "microblog-y" in nature. Communities are represented as users on Mastodon. So, search for @technology@beehaw.com on Mastodon. You will see all the posts in the community as "toots," and all comments as replies.
Lemmy apps are in the works, which will have a native link aggregator UX.
Edit: Better answered by @tezoatlipoca@lemmy.ca