Tridents are not craftable. They must be picked up as a drop from a killed drowned.

What enchantment gives a trident?

Enchantments for Trident Enchantment Description Loyalty Returns your weapon when it is thrown like a spear Mending Uses xp to mend your tools, weapons and armor Riptide Propels the player forward when enchanted item is thrown while in water or rain Unbreaking Increases durability of item.

Can you fish a trident?

You cannot craft tridents. Instead, you can acquire it from the drowned, the zombie-like underwater creatures, or a zombie turned into a drowned.