Hi Aternos you can add mod "Cloud Boots"?
Link: https://www.curseforge.com/minecraft/mc-mods/cloud-boots-mod
This is curseforge page 
Cloud Boots Mod adds a special blue boots with yellow feathers, because this boots are made of golden feathers, with this boots you can jump high and you don't have fall damage from any fall height. If you jump with this boots this boots made white particles. Golden feathers can be made - 1 normal feather and 8 gold ingots, need 4 this golden feathers to create this boots.
Sorry for my bad english if I made mistakes