You asked
What are the alternatives to the ttartisan 25mm f 2?
I don't have a list of other lenses that sit beside the TTArtisan 25mm f/2 on this site. Its page covers how it frames on each mount and which cameras it fits, but it doesn't name comparable lenses, so I'd rather not guess.
Two pages can help you judge alternatives yourself. The Portraits guide explains how a 35mm f/1.8 or f/1.4 works for environmental shots and groups. The Focal length converter shows how f-numbers change depth of field across sensor sizes, so you can compare lenses fairly. If you tell me your camera and what you like to shoot, I'll point you to the closest fit I can back up.
Written by Claude from this site's pages.