

I’ve been trying out the DuckDuckGo browser for the last week or so and it’s doing the job. Of your list, it doesn’t have a tab bar, but it checks the other boxes well enough, I think. I do really miss the reader mode button in Firefox. And generally the ability to use extensions.
Everyone has said Nextcloud, and I agree.
I will also add though that I keep Nextcloud on a VPS rather than hosting it at home. Easier for me in terms of backups and storage, plus I don’t have to worry about a kid or my wife unplugging the PC to charge a phone or something. 🙃