Learning more about aircraft is a great way to make yourself less nervous about flying, since planes are designed to be really safe! Most planes have six wheels in total: two under the nose of the plane, and two more under each wing. The wheels form a triangular shape to catch the plane perfectly when it lands.
Since there are two tires at each point on the plane, a safe landing can still be conducted even if one tire fails. This means that, even in the rare occurrence that a plane tire pops, you won’t be in danger during takeoff or landing; it’s just a headache for the pilot and future passengers on the plane, as the tire will need to be replaced before the plane can take off again.