In his eyes, my existence is a joke. What do you mean?

In his eyes, my existence is a joke, which means that he doesn't respect and value me, and even doesn't agree with my existence.

He won't even give me a chance to prove himself. He treated me as a boring joke. He never noticed me. He thinks I am a worthless existence.

This feeling hurts me, but it also makes me stronger. I will try to let him know that I am not a joke, but a valuable existence.