Could Sasha Waybright (Amphibia) Beat Amity Blight (The Owl House)

in a fight?

No, it is unlikely that Sasha Waybright (Amphibia) could beat Amity Blight (The Owl House) in a fight. Amity is a powerful witch with a wide range of magical abilities, while Sasha is a small frog with no magical powers. Amity would likely have the upper hand in any physical confrontation.