Thank you, I installed soundmixer, for now that seems the easiest to try, and it claims to fix my problem at least on you tube.
If I get more desperate, I might try to switch to JACK, but in the past JACK was not what I consider user friendly.
It does make me sad they don’t fix and or extent ALSA, but keep inventing new layers on top of ALSA.
Jack, pulse audio and pipewire all work on top of ALSA.
When I asked about this on the Linux musician forum, the reply I got was that almost nobody knows fully how ALSA works, because the ALSA code is poorly documented. (the guy stating this is writing. music producing plugins for Linux)
I need to win the lottery then hire a few coders who will for starters just fix the poorly documented part of ALSA.
First test is positive, volume jumped to 80%, and not to 100% in firefox when starting a new vid.
That is already progress, and I have not even read the manual of soundmixer.