https://7artisans.store/products/50mm-f1-05
is a fantastic wide aperture lens which is commercially available, affordable and a great value. Personally I tend to get bored if I am walking around with a 50mm lens but with that lens, the challenge of manual focus, the ability to take photos with hardly any light, and the ability to take dreamy photos like people have never seen I have so much fun. They make it for all the major camera brands.
Overall I am impressed with Chinese lens manufacturers who make other lenses like
https://www.venuslens.net/product/laowa-9mm-f-5-6-ff-rl/
which again are a great value and let me take pictures you haven't seen before.