I feel like "guy" is weird in that I often hear people say "you guys" (and similar phrases) to groups of women but "guy" on its own is referring to a man at least 99% of the times I hear it. I'm curious if other people actually use it completely non-gendered (it's definitely gendered in the places I've lived in the US).

It's always gendered in the singular, very rarely people may use the singular in a non gendered way and usually this conversation that we are having follows.