Just the Resource Pack: Pokéball (Assets)

Just the Data Pack: Pokéball (Data)

Both packs in a single file: Pokéball (All)

To install this addon the Vanilla way, follow these tutorials:

Minecraft Wiki - Installing a Data Pack

Minecraft Wiki - Loading a Resource Pack

To install this addon for all worlds, please follow the below steps:

Download Paxi for Forge and YUNG's API for Forge for 1.16.5 and put them in your mods folder.

Run the game, then minimize it or close it.

Go to where your mods folder is, and go up one level (by default, this would be your .minecraft folder). Find the folder labelled config, and within that folder should be another folder labelled paxi.

Within the paxi folder, there should be a folder titled datapacks and a folder labelled resourcepacks. Put the Pokéball (Data) or Pokéball (All) file within the datapacks folder, and the Pokéball (Assets) or Pokéball (All) file within the resourcepacks folder.

Upon entering a world after doing the above steps, the addon should be active, this can be checked by running "/datapack list" and checking for the addon (will be shown in pink), and by checking your resource packs menu (the description should be in pink).