What makes robots more fun and easy to use is the game controller style joysticks that you can also get for the micro:bit.  Kitronik, DF Robot, ElecFreaks and many more make remote controllers for you robots from simple to advanced.  Again these are designed to be plug and play with your micro:bit.  You can use the built-in wireless communication blocks from Makecode and the instructions from the manufactures to get your robots racing around in a very short amount of time.