Okay kiddo, have you ever noticed those bathroom signs that show either a girl in a dress or a boy wearing pants? Those signs are telling you which bathroom to use based on your gender. A unisex public toilet is a restroom that doesn't have those signs because anyone can use it.
So, it's a bathroom that boys, girls, women, and men can all use together – like a family bathroom. This kind of bathroom is becoming more common because some people don't feel comfortable using a bathroom that's only for their gender. Plus, it's easier to find a bathroom when there's only one type instead of having to search for specific men's or women's restrooms.
Unisex public toilets typically have more stalls and fewer urinals than typical men's restrooms because most women prefer stalls to urinals. These bathrooms are usually cleaned more often because they are more frequently used than other restrooms.
In short, a unisex public toilet is a bathroom that's open to everyone, like a family bathroom, making it easier for everyone to use the restroom comfortably when they're out and about.