Terraria Item Last Prism?

Hello would like to receive the Last Prism from the Moon Lord. However, he just doesn't give it to me. I play on the PS4. Can someone help me?

Just have to be lucky with the Moon Lord Drops

Thanks, I was a little impatient. I've defeated him over 30 times.

Wow, that's really bad. The best thing to do is just keep defeating one or the other, he'll drop it.

Yes, I just finally made it 😂😂

👍😂