my PS4 won’t open Minecraft

Recently when I turn on my PS4, it says that the Minecraft disc isn't in, even though it is. I can usually restart it a few times and it'll finally work, but it won't let me start it up today. right now it's like flickering back and forth between trying to open Minecraft and going back to the home screen. I have a video but I'm not sure how to upload it. I'm happy to answer any questions, I just wanna play Minecraft 😭🙏