It actually means “to receive.” If you want to indicate that something's in the process of becoming something else, werden is the word for you. If you want to say you're getting sick, use werden. Ich werde Krank.

How do you use the word have in German?

Present Tense

I want to say, “I have a cat” in German. Since we are using “have,” we'll choose haben. Our subject is ich, so the corresponding conjugation is habe.

What is the difference between Sein and werden?

In your context "werden" is a passive operation (Vorgangspassiv), where something is happing and "sein" is a passive state (Zustandspassiv), where something just is.