Windows 11 Unable To Associate MP4 Extension

Recently I wanted to associate MP4 extension to be open in VLC Media Player….but I couldn’t. It’s just not possible. VLC sends me to system settings and in system setting I can’t create a new extension. Like what the fuck?

That means I had to for each file click Open With and select VLC from the list. Or start VLC and open it from there.

Really?

Sometimes I just ask - whyyyyyyyyyyyyyyyyyyyyyyyyyy?