Most of the enchantments have 10 levels with this datapack
Reworked some enchantments
Added new enchantments
This datapack completely changes the enchantment system as it allows higher values for enchant levels and nerfs/buffs some enchantment costs and powers.
This datapack can make the game easier in some cases.
This is the beta version of the datapack and will get some updates later. If you encounter any bugs please report them to me.

Changed Enchantments

Aqua Affinity

Old Max Level: 1
New Max Level: 10
Enchantment power and cost balanced.

Bane of Arthropods

Old Max Level: 5
New Max Level: 10
Enchantment power and cost balanced.
Does not give slowness effect now.
Now compatible with smite and sharpness.

All Vanilla Protection Enchantments

Old Max Level: 4
New Max Level: 5
Enchantment powers and costs balanced.
All protection enchantments are now compatible with each other.

Breach

Old Max Level: 4
New Max Level: 10
Enchantment power and cost balanced.
Now compatible with density.

Density

Old Max Level: 5
New Max Level: 10
Enchantment cost balanced.
Now compatible with breach.

Depth Strider

Old Max Level: 3
New Max Level: 10
Enchantment power and cost balanced.

Efficiency

Old Max Level: 5
New Max Level: 10
Enchantment cost balanced.

Feather Falling

Old Max Level: 4
New Max Level: 10
Enchantment power and cost balanced.

Fire Aspect

Old Max Level: 2
New Max Level: 10
Enchantment power and cost balanced.

Flame

Old Max Level: 1
New Max Level: 5
Enchantment power and cost balanced.

Fortune

Old Max Level: 3
New Max Level: 10
Enchantment cost balanced.

Impaling

Old Max Level: 5
New Max Level: 10
Reworked Enchantment

Knockback

Old Max Level: 2
New Max Level: 10
Enchantment power and cost balanced.

Looting

Old Max Level: 3
New Max Level: 10
Enchantment cost balanced.

Loyalty

Old Max Level: 3
New Max Level: 10
Enchantment power and cost balanced.

Luck of the Sea

Old Max Level: 3
New Max Level: 10
Enchantment cost balanced.

Lunge

Old Max Level: 3
New Max Level: 10
Enchantment cost balanced.

Multishot

Old Max Level: 1
New Max Level: 10
Reworked Enchantment

Piercing

Old Max Level: 5
New Max Level: 10
Enchantment cost balanced.

Power

Old Max Level: 5
New Max Level: 10
Enchantment power and cost balanced.
Now supported on crossbows.

Punch

Old Max Level: 2
New Max Level: 5
Enchantment power and cost balanced.
Now supported on crossbows.

Quick Charge

Old Max Level: 3
New Max Level: 10
Enchantment power and cost balanced.
Incompatible with Overcharge

Respiration

Old Max Level: 1
New Max Level: 10
Enchantment power and cost balanced.

Riptide

Old Max Level: 3
New Max Level: 10
Enchantment cost balanced.

Sharpness

Old Max Level: 5
New Max Level: 10
Reworked Enchantment
Now compatible with smite and bane of arthropods.

Smite

Old Max Level: 5
New Max Level: 10
Enchantment power and cost balanced.
Now compatible with sharpness and bane of arthropods.

Soul Speed

Old Max Level: 3
New Max Level: 10
Enchantment power and cost balanced.

Sweeping Edge

Old Max Level: 3
New Max Level: 10
Enchantment power and cost balanced.

Swift Sneak

Old Max Level: 3
New Max Level: 5
Enchantment power and cost balanced.

Thorns

Old Max Level: 3
New Max Level: 5
Enchantment power and cost balanced.

Unbreaking

Old Max Level: 3
New Max Level: 10
Enchantment cost balanced.

Wind Burst

Old Max Level: 3
New Max Level: 5
Enchantment power and cost balanced.

There are many more details that I couldn't fit here, you can test them in game.

New Enchantments

Armory

Max Level: 5
Supported Items: All Armors
Gives extra armor.

Attack Speed

Max Level: 10
Supported Items: All Melee Weapons
Increases attack speed.
Incompatible with Heaviness.

Big Foot

Max Level: 5
Supported Items: All Boots
Increases step height.

Bloodlust

Max Level: 4
Supported Items: All Weapons
Deals increased damage against wounded mobs/players.

Critical Power

Max Level: 10
Supported Item: Bow
Boosts damage on critical bow attacks.

Critical Sharpness

Max Level: 10
Supported Items: All Melee Weapons
Boosts damage on critical hits.

Freezing

Max Level: 10
Supported Items: All Melee Weapons
Inflicts slowness to the victim.

Frenzy

Max Level: 5
Supported Items: All Melee Weapons
Gives strength effect to the attacker.

Haste

Max Level: 10
Supported Items: All Tools
Increases block break speed.

Health

Max Level: 10
Supported Items: All Armors
Increases max health.

Heaviness

Max Level: 10
Supported Items: All Melee Weapons
Increases your attack damage at the cost of attack speed.
Incompatible with Attack Speed.

Knockback Protection

Max Level: 5
Supported Items: All Armors
Increases knockback resistance.

Leaping

Max Level: 5
Supported Items: All Boots
Increases jump strength.

Overcharge

Max Level: 1
Supported Item: Crossbow
Greatly increases damage but increases crossbow charge time.
Incompatible with Quick Charge.

Poisoning

Max Level: 5
Supported Items: All Melee Weapons
Inflicts poison to the victim

Reach

Max Level: 10
Supported Items: All Tools and Swords
Increases block interaction range and entity interaction range.

Regeneration

Max Level: 1
Supported Items: All Chestplates
Gives regeneration effect.

Shielding

Max Level: 1
Supported Items: All Chestplates
Gives resistance effect when took a damage.

Swiftness

Max Level: 10
Supported Items: All Boots
Increases movement speed.

Toughness

Max Level: 4
Supported Items: All Armors
Gives extra armor toughness.

Vision

Max Level: 1
Supported Items: All Helmets
Gives night vision effect.

Withering

Max Level: 4
Supported Items: All Melee Weapons
Inflicts wither to the victim.

Note: I couldn't write the full details of the enchantments because description shouldn't be something like a user manual. I recommend testing the enchantments in a test world to learn how they work properly.

Enjoy :)

Recommended mods for this datapack

AttributeFix by Darkhax
Overflowing Bars by Fuzs
Armor Cap Remover