You asked
Is the fujifilm x t100 good for wildlife?
Here is what the site says about that.
From Fujifilm X-T100: Fujifilm X-T100: A mirrorless camera by Fujifilm with a 24.2-megapixel APS-C sensor, announced in 2018. Specs - Maker: Fujifilm - Mount: Fujifilm X - Sensor: APS-C, 23.5 x 15.6mm, crop factor 1.5 - Resolution: 24.2 megapixels - Stabilisation: none in the body; use stabilised lenses for slow shutter speeds - Announced: 2018 - Type: mirrorless camera Focal lengths on it Lenses frame like 1.5 times their focal length on full frame: 16mm ...
From Wildlife and sport: Wildlife and sport: Wildlife and sport are the hardest things to photograph, and the most gear-dependent. The subject is far away, it moves fast, and it won't do it again.
Quoted from this site's pages.