I use Floccus which syncs via caldav (self-hosted via Nextcloud). In a similar vein, I host ArchiveBox and archive the important stuff that way.
F-Droid
F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
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Personally, I prefer Omnivore.
Omnivore looks great. Combination of wallabag X linkding. But it seems they make the self-hosted setup intentionlly compliacted and working on only one kind of self-hosted setup.
As @ephera said, Wallabag. Wallabag has an Fdroid app btw.
Also, there’s this app called Handy Reading. Haven’t tried it yet, so ymmv.
i tried handy but chose Feeder over it because it's more customizable
feeder has a "save article" option op can use for reading offline but it won't sync between multiple machines (if i'm not mistaken)
i couldn't find a foss local bookmark library replacement to pocket