Youtube tiny Text size

Hi,

I don't know how it happened, but for a while now, my Youtube Textsize in Safari has been tiny and I don't know how to fix it. The general font size is normal though, so I can't imagine what the problem could be, because every possible fix I found on Youtube just changes the YouTube font Size, but that messes up my entire YouTube if I do that, so I'm not sure what to do. I checked on a different account and it was normal there.

Thx for helping in advance,

Timothy