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Similar here. As I don’t need multi-user support, I don’t bother with self-hosting some tool.
Bookmarks go to Safari where they’re synced between all my Apple devices and pop up automatically in the address bar.
And long-term bookmarks (news articles, references, etc.) go into Anybox which keeps an offline copy of the website so I can still read it in 10-20 years.
On this Reddit thread they suggested SeaFile as their client explicitly supports selective sync. And also MountainDuck which can work with various protocols.