I am using the TTArtisan APC-C 25mm F2.0 for X mount.
I initially bought it to check if i like fixed focal length for street photography.
I now have the FUJINON XF35mmF2 R WR and the 23mm of it ... but they are larger and 10 times more expensive then the TTArtisan so i do not use them as ... robust which kind of limits me.
Cheap lenses are replaceable ones. And this reduces fear of doing something stupid (read great)