Put your hands out in front of you.

Lift up the pointer finger on your right hand and the thumb on your left hand.

Change hands after 2-3 seconds. Now lift up the pointer of your left hand and the thumb on your right hand.

Try to change your hands every 1-2 seconds.

Does it work? If yes, you still have a chance of becoming a good drummer or juggler. Most people just can’t make different actions with different hands at the same time unless they are trained to do it.