Craft the arrows on the Crafting Table. For the crafting you need the same item as before and an arrow.
You need to have the main More Arrows Data Pack installed and if you want to use a Recipe Unlocker use this one.
|1.19 -||Download Data Pack|
|1.18.2||Download Data Pack|
|1.18 - 1.18.1||Download Data Pack|
|1.17 - 1.17.1||Download Data Pack|