This is my Gnome desktop right now. Nothing too fancy, just the usual Gnome 49 with extensions (Blur my shell, AutoAccentColour, System Monitor, etc.), a Win11 inspired background and two apps running (Vivaldi browser playing a Youtube video and Kew music player in a terminal).
I play around with configs and add-ons from time to time but i ALWAYS move back to this Gnome designed desktop and it fits my needs.
Vivaldi is a beast when it comes to handling memory. It has features that I've never found in other browsers eg. workspaces (similar to tab grouping extensions like sideberry in Firefox) . It still supports ublock. It can sync.
It is degoogled.
I use it on all my machines and android devices.
Another chromium based browser that I would HIGHLY recommended is Cromite - a fork of bromite. It is also recommended by the graphene OS team.
It's chrome, without google. Plus a ton of security and privacy additions and options. It doesn't have any added productivity or other features besides those.
It doesn't have a sync feature, but exporting is a thing.
It is great with memory, too.
PS. I don't have a computer or phone with more than 8GB ram.
(Don't worry guys, I also use my own user.js in ff, use tor, mullvad browser, etc.)