LTW3/data/item/loot_tables/gold1.json

{"pools": [{"rolls": 1,"entries": [

{
    "type": "minecraft:item",
    "weight": 6,
    "name": "minecraft:gold_nugget",
    "functions": [
        {
            "function": "minecraft:set_nbt",
            "tag": "{\"is_bonus\":1b,\"bonus_new\":1b,\"bonus_gold\":1}"
        }
    ]
}

]}]}