How do wolf spiders catch its food?

Spiders catch their prey by waiting it out after they make their web. When the prey ( or fly in this case) gets caught in the web, the spider wraps it up, and lets it sit for a bit. The spider will then come back later and eat the prey. ( fly) I am new, but i know a lot about spiders and insects.
With there webs there prey practaly come to them.