You asked
Is the laowa 15mm f 4 5 0 5x wide angle macro hard to focus manually?
The site doesn't rate how hard this lens is to focus, but it is manual focus only. There's no autofocus, so you turn the focus ring yourself and judge sharpness by eye, or with your camera's focus peaking or magnification if it has them. The lens also has a 0.5X macro ratio and a wide 15mm view, so expect the focus to be fiddly at close range.
If you want a macro lens that focuses to 1:1, the Laowa 15mm f/4 Wide Angle Macro is the one the site lists with that close focusing. Its page doesn't say whether it's autofocus, so check there before you buy. For the basics of manual focus on a camera, see Your first camera.
Written by Claude from this site's pages.