There are kayaks made in a variety of materials, but the two most common are:
Plastic - These are the most durable and do not break in the first place. They are also cheaper and a good option for beginners because they are paddled a little slower.
Fibreglass - Fiberglass kayaks are more shock sensitive and crack easier than plastic kayaks. However, they are stiffer and give more of a boat feel and are a good choice for an experienced paddler.
Although it is really a matter of taste, there are some general recommendations for which paddle type you should choose for your paddle(https://www.pricerunner.com/cl/1204/Swim-Water-Sports?attr_57159162=60448343). If you don’t paddle that often and for shorter distances, for example, in rivers among rocks, then an aluminium paddle is a good choice. It is the cheapest kind, and it is also shock resistant. If you are an experienced paddler who paddles longer distances and often, then it is recommended that you choose a paddle in fibreglass or carbon because it provides better performance and weighs less.