I tried to make a sword with all enchantments, but it still says

Why can't I enchant a sword on an anvil in Minecraft? - Quora

How To Enchant and Disenchant Items in Minecraft

I tried to make a sword with all enchantments, but it still says too expensive. any idea why, and if I can fix this? Thanks : r/technicalminecraft

Minecraft Magic: What Enchantments Can Go on a Sword in Minecraft - Minecraft GOD Sword (Avomance)

Enchants Not Showing up on Sword

How many enchantments can a sword have in Minecraft?

Minecraft Dungeons:Sword – Minecraft Wiki

Use Command Block to Give an Enchanted Diamond Sword

I have not enchanted sword and a mending book. When I try to use an anvil it says that it's too expensive. I also have around 50 levels. What am I doing