I’ve said this many times when this came up.
The Mini didn’t fail because it was too small. It failed because it wasn’t small enough.
I want a small phone that I can use single-handedly. A smaller screen is a tradeoff. The Mini had the disadvantage of a smaller screen plus the disadvantage of not being usable with a single hand. Because of that, I never bought one - if I’m going to be handicapped anyway, I’d rather have a larger screen.