I can’t ride a bike = Я не умею ездить на велосипеде.
P.S: Я могу means I’m physically or morally capable of doing smth. Я не могу убить человека - I can’t kill a man. Я умею обрабатывать раны, но я не могу видеть кровь. I can treat wounds (= I was trained), but I can’t see blood (= I faint).
Put food, toys, gadgets or any other thing that you want to have so badly right now but you shouldn’t have it, set the timer by a rotating button (it can be set to periods ranging from one minute to ten days), and that’s it. You have only five seconds to change your mind, and after that, the container stays sealed and cannot be opened until the countdown is over.