Maybe there is a way to change airdrop drop loot? (make better) ? Maybe there is a plugin ?

FancyDrop lets you use custom loot tables. If you're using BetterLoot, you can also tell FancyDrop to use its loot tables in oxide\data\BetterLoot\LootTables.json. If you're not using BetterLoot, the FancyDrop loot tables are in oxide\data\FancyDrop.json file.

fancy drop is great for that