According to a self experiment of a German science Youtuber with doctor supervision you can technically live healthy with just pizza, but you need to chose the topping carefully.
i'm not sure if i would be willing to lose sleep over a 4 hour mario kart video. now a 4 hour video about invisible walls in mario 64? that's a different story
Perhaps consider B12 as well?
I had a lack of both which I discovered because I was thinking of going vegan and took a blood test as a control to compare later.
So, everything north of the Alps, basically? That doesn't sound right to me. I tried a vitamin D pill once but it gave me a rash immediately, which is a sign of overdosing.