Horizontal zoom on mouse wheel

Hello all and sorry for the possibly dumb question but I already looked on the forums to no avail.

The problem is simple: I can’t zoom horizontally using CTRL+mouse wheel, it scrolls horizontally instead.
It works fine for Shift+wheel (scroll horizontally), and alt+wheel (scroll vertically), but the most important one for me is the basic horizontal ZOOM and it doesn’t work. I’ve tried a different mouse and I get the same behavior, and checked the shortkeys and there’s no way to set the mouse wheel functions. Also checked the preference settings and couldn’t find a proper option for this.

Anyone else with this issue or knows how to solve it please?
I know it’s just a silly problem but it’s anoying having to use the G/H keys or the timeline zoom all the time!

Many thanks in advance!