Ideas for Peaceful Mode

When it comes to certain players like myself, I’ve noticed how not all of us like playing is Normal Mode or higher, but want a way for health & hunger to go down like in Easy, Normal, or Hard Mode & not all players can access mods when playing on mobile, so I wanted to give an idea for Minecraft of adding a system, rather when playing in Normal Mode, you have a switch to turn off Hostile Mob Spawns & the Hostile Mobs will not be in the game once you join, having health & hunger go down, or when in peaceful mode, there can be a switch to turn on a mode for health and hunger to go down, if you accept my idea, I would be grateful. Have a good day!