Accurate motors for robot

Hi ive been looking for a motor to use on my robot to be able to set it to move set distances/ turns and have been having issues finding a 12v motor (encoded dc preferably) that has a mount i can use to fix it to the rest of the robot. As i dont have a 3d printer is there any you would suggest.

Hi,

Please, could you give me the model of your motor?

There is tons of mounting brackets for motors and tons of different motor models.

I will try to do my best to help you.