You asked

Is the ttartisan 10mm f 2 asph good in low light?

Here is what the site says about that.

From TTArtisan 10mm f/2 ASPH: TTArtisan 10mm f/2 ASPH: A prime lens by TTArtisan for APS-C cameras, 10mm f/2. Specs - Maker: TTArtisan - Focal length: 10mm (prime) - Maximum aperture: f/2 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Nikon Z, Canon RF, Micro Four Thirds - Stabilised: no - Autofocus: no, manual focus What it frames like - On APS-C (Sony E, Fujifilm X, Nikon Z): like 15mm on full frame; f/2 gives about ...

From TTArtisan 14mm f/2.8 ASPH: TTArtisan 14mm f/2.8 ASPH: A prime lens by TTArtisan for Full frame cameras, 14mm f/2.8.

Quoted from this site's pages.

From these pages