@tsarstepan,
Pizza wasn't really available over until the 1980s.
When I was a kid I remember watching Scooby Doo and wondering what it was Shaggy was eating.
My mum wasn't any use either she just told me it was American and that was the end of the matter.
When I was 15 Homepride brought out a "Make your own pizza" kit.
This was bread mix and tomato sauce with suggestions on topping.
It was awful, and not only that I was then incredibly ill for two weeks. It wasn't the "pizza," but I was put off all toasted cheese for years.
I didn't have an actual pizza until I was in my 20s.