Best lenses for APSC sensor

I own a canon rebel t100 and I am looking into lenses and need some help looking for some, I am looking for something that works with my camera so ether a Ef or Ef-s lens I have a budget of under 400 looking for something under the focal length of 50 if a prime lenses and looking for something with a low aperture I’ve been looking more down the sigma line but I’m not sure