Steps for altering your avatar’s appearance in every Roblox experience, from adding and removing items to changing your skin ...

Roblox provides its users with a wide range of options for personalizing their avatar or character. Players can purchase or acquire free items such as clothing, accessories, and other cosmetics.

Probably if enough players react negatively to the new cursor or ask for an option to customize the cursor shape, the Roblox developers might consider it as an upcoming update to the game.