Although many of those who loved it until the legendary version 12 consider it to be a dead horse nowadays, Opera 67 might be a step in the right direction. The latest release of this troubled web browser — available for Windows, Linux, and macOS — comes with Workspaces, tab cycling, a Sidebar setup panel, and more.
https://www.notebookcheck.net/Opera-67-for-desktop-now-available-with-quite-a-few-noticeable-changes.454704.0.html
Hate that Opera 67 still has a hardcoded grey title bar with no differentiation between active and inactive window.