How do you spawn custom loot tables with stuctures

search on the website

These are ones I use and the full list. The last example is from my own mod calling a custom mod table.

/setblock ~ ~ ~  chest{LootTable:"minecraft:chests/end_city_treasure"}

/setblock ~ ~ ~  chest{LootTable:"minecraft:"}

/setblock ~ ~ ~ minecraft:barrel{LootTable:"minecraft:chests/spawn_bonus_chest"}

/setblock ~ ~ ~ minecraft:barrel{LootTable:"minecraft:chests/village/village_desert_house"}

/setblock ~ ~ ~  minecraft:chest{LootTable:"imagine_sw:lootchest"}

chests/abandoned_mineshaft
chests/buried_treasure
chests/desert_pyramid
chests/end_city_treasure
chests/igloo_chest
chests/jungle_temple
chests/jungle_temple_dispenser
chests/nether_bridge
chests/pillager_outpost
chests/shipwreck_map
chests/shipwreck_supply
chests/shipwreck_treasure
chests/simple_dungeon
chests/spawn_bonus_chest
chests/stronghold_corridor
chests/stronghold_crossing
chests/stronghold_library
chests/underwater_ruin_big
chests/underwater_ruin_small
chests/village/village_armorer
chests/village/village_butcher
chests/village/village_cartographer
chests/village/village_desert_house
chests/village/village_fisher
chests/village/village_fletcher
chests/village/village_mason
chests/village/village_plains_house
chests/village/village_savanna_house
chests/village/village_shepherd
chests/village/village_snowy_house
chests/village/village_taiga_house
chests/village/village_tannery
chests/village/village_temple
chests/village/village_toolsmith
chests/village/village_weaponsmith
chests/woodland_mansion

then search on yt, there are tutorials there

also it only works for 1.14