hi, i wanna create a datapack to recrate eden apple from assassin's creed

I installed the Assassin's Creed mod in version 1.20.1, but the apple has no effect. I would like it so that when a player holds the apple, players and mobs within a 20-block radius experience mining fatigue, slowness, and slow falling. I also want the player holding the apple to lose health and die after 10 seconds. I'm absolutely a beginner, if someone can help you it will be really kind. thanks have a nice day