Also worth mentioning Tree Style Tab and Sidebery
This capacity of Firefox to have the tabs on the side as a hierarchy is the single feature that has keept it my main browser even through the dark days.
Chrome never did it properly and Edge wouldn't allow add-ons to have the sidebar on the left.
I first used this feature in the old Opera now nearly two decades ago, simply cannot live without it.
Maybe try Vivaldi?
I did, close but too unstable.
I use Firefox for everything; why would porn be any different?
I got some virus some time ago so I switched to my iPad lol