Any zoom lenses I’ve used have a lower aperture at their widest such as 3.5 but a but higher one at their most telephoto like a 5.6
I think to get the lower aperture zoom lenses you’re spending top cash.
Zooms traditionally have worse image quality but it’s not something I’ve really noticed…
Zoom lenses can be quite good when you’re starting because they’re a cheap way to learn focal length.