Your bike needs regular maintenance in order to work well. To extend the lifetime of your bike it’s good to check the following:
Tire pressure should be adjusted regularly since the pressure will go down with time. The recommended pressure is written on the side of the tire.
Puncture can be caused by many things, but is rarely a guarantee issue.
The gear cables get extended with time and already after a short time they need to be adjusted for the gears to work well.
The breaks need regular adjustment. Important! Avoid all kind of substances/lubricants/dirt on the gears.
Wheel bults, handlebars, pedals and acres need to be checked.
The chain needs to be cleaned and lubricated regularly.
The bicycle should be kept clean and be stored in a safe place.