Need help with a functional Pokemon catching system

Hi folks,

I'm currently working on my new Pokemon Mod named "Craftelmon" for Forge 1.18.2, which adds all the new 9th Generation Pokemon into Minecraft. When the user is right-clicking on a Pokemon with the Pokeball item or when the user is dropping the Pokeball on a Mob, the Pokemon mob should disappear with a 75% chance. Now I need help with a good procedure system which does this. Can someone help me pls?

Sincerely yours,

Atten