Hi, I've made a new loot crate/random loot datapack:

There are normal, rare and legendary chests with items (pictures)

If the data pack is enabled, use "/trigger Chests", there you see a list of your chests. If you right click the chest minecart above you you can select chests. The minecart will be destroyed if you walk 5 block away.

Use "/trigger Chests" to see how many chests you have remaining, players with server operator permission level 2 or higher can add chests to players with "/scoreboard players add <Player> normal/rare/legendar <Count>".

If you have the tag 'Admin' ("/tag @s add Admin") you have an unlimited amount of chests without manually having to increase them.

Download for versions from 1.14 to 1.16