The new Chrome tab group is not great, but it does help. One group for things that are being processed (handle asap), one group for "stuff to check", one for each project I'm working on and one for entertainment. All with short names and their own color, so it takes up a minimum of space.

The remaining space is for temporary tabs. Larger temporary side quests get their own window and will be either closed or moved into a new group before closing the browser.

It's still not as good as Firefox's nested Tree Style Tab once was (and might be again?) but I'm kind of locked into Chrome at this point.

Bookmarks only work for tools and resources I need on a regular basis, and even then it's usually easier to just google them when they are needed. Who has the time to actually study all those bookmarks saved for later?

Maybe some kind of organizational bookmark extension, that would help you go through it all, could help with this.