Just use Tree Style Tab

It’s interesting, but it wastes to much of the screen.

True, sadly I’m unable to stop using tree style tabs after getting accustomed to it years ago. It’s one of those rabbit holes I’m unable to climb out of, similar to modern keyboard layouts.

Don’t be sad. I’d say you’re doing it right! Vertical space is much more limited than horizontal on 21st century monitors, and tabs are wide, not tall. Tree tab UI enables semantic layout (showing you practically unlimited levels of nesting), plus they always give you consistent room to read page titles. Why should the usability of tabs decrease as you open more of them?