So far I'm sticking with FireFox. When I update my bookmarks, I save them to a JSON file, and then export them to HTML, which I use with my other, non-FireFox browsers.
I also have created a sort of "table of contents" system that allows me to narrow in on similar bookmarks. It's too high-maintenance, but it helps
Example, weekly news links...
02-WEEKLY (heading only)
02-01-WEEKLY (folder containing bookmarks)
02-02-WEEKLY (folder containing bookmarks)
02-03-WEEKLY (folder containing bookmarks)
02-04-WEEKLY (folder containing bookmarks)
02-05-WEEKLY (folder containing bookmarks)
Each of these sections (which are folders) has a different slant: Basic news, Fluff, Food & Health, Science News, Computing News, and so on. Some other categories I have go much deeper, and if I need to revise them it's a major pain.
If eventually I need to do something else, I'll probably adopt or create something with Emacs org-mode.
Example: (I just found this, have no idea if it's actually relevant...) "org-mode for browser bookmarks" at https://www.reddit.com/r/emacs/comments/bshrg0/orgmode_for_b..., which points to "org-linkz" at https://github.com/p-kolacz/org-linkz
There is more along these lines at https://duckduckgo.com/?t=ffab&q=emacs+org+mode+browser+book...