Helmet: 
Upgrade helmet helps you to equipment helmet:
Level 1: chainmail Helmet 

Level 2: Golden Helmet 

Level 3: iron Helmet 

Level 4: nothing

Level 5: diamond Helmet 

Level 6: Netherite Helmet 

Level 7: chainmail and leather Helmet with Night vision I effect

Level 8: Iron shovel and golden Helmet with Night vision I effect

Level 9: Diamond Helmet with Night vision I effect

Level 10: Netherite Helmet with Night vision I effect

Level 11: chainmail and leather Helmet with water breathing

Level 12: iron and golden Helmet with water breathing

Level 13: Diamond Helmet with water breathing

Level 14: Netherite Helmet with water breathing
 

Chestplate:
Upgrade chestplate and you can wear chestplate !
Level 1: Chainmail chestplate?nbsp;
Level 2: golden chestplate 
Level 3: iron chestplate 
Level 4:  nothing
Level 5: diamond chestplate 
Level 6: Netherite chestplate 
Level 7: Stone and wooden chestplate with haste I effect
Level 8: Iron shovel and golden chestplate with haste I effect
Level 9: Diamond chestplate with haste I effect
Level 10: Netherite chestplate with haste I effect
Level 11: chainmail and leather chestplate with resistance II effect
Level 12: iron and golden chestplate  with resistance II effect
Level 13: Diamond chestplate with resistance II effect
Level 14: Netherite chestplate with resistance II effect

Shield:
Upgrade shield and you can use shield!
Level 1: Shield
Level 2: Shield with resistance I effect
Level 3: Shield with resistance II effect
 

https://www.youtube.com/watch?v=qLGGso9JkLo

Leggings:
Upgrade Leggings and you can wear Leggings!
Level 1: Chailmail Leggings?nbsp;
Level 2: golden Leggings
Level 3: iron Leggings
Level 4:  nothing
Level 5: diamond Leggings 
Level 6: Netherite Leggings 
Level 7: Stone and wooden Leggings with Jump booster I effect
Level 8: Iron shovel and golden Leggings with Jump booster I effect
Level 9: Diamond Leggings with Jump booster I effect
Level 10: Netherite Leggings with Jump booster I effect
Level 11: chainmail and leather Leggings with Jump booster II effect
Level 12: iron and golden Leggings   with Jump booster II effect
Level 13: Diamond Leggings with Jump booster II effect
Level 14: Netherite Leggings with Jump booster II effect
 

level 1 : potato, carrot, wheat seeds, beetroot seeds, ...
level 2: baked potato,...
If you are not farmer level enough, but in your inventory or hotbar with farmer's items, you will be blind, slow and weak.

Upgrade magic and you can use magic item // nature
Level 1: spider eye, rotten flesh, bone, ghast tear?nbsp;
Level 2: Blaze rod, blaze powder, ender pearl, ender eye
Level 3: Potion, brewing stand
Level 4:  splash potion, golden carrot, magma cream
Level 5: glistering_melon_slice
Level 6: Totem of undying, crystal, golden apple
Level 7: Enchanted golden apple, linngering potion
Your item will be clear if you not enough level magic

Bow:
Upgrade bow and you can use bow
Level 1: Bow
Level 2: Bow with speed I 
 

Elytra
Upgrade elytra and you can eqquipment elytra
Level 1: Elytra,...
Level 5: Elytra with speed I,...
Level 10: Elytra speed I and slow falling?nbsp;
 

Boots:
Upgrade boots and you can equipment boots
Level 1: Chailmail boots
Level 2: golden boots
Level 3: iron boots
Level 4: ?nbsp;nothing
Level 5: diamond boots 
Level 6: Netherite boots
Level 7: Stone and leather boots with speed I effect
Level 8: Iron shovel and golden boots with Speed I effect
Level 9: Diamond boots with Speed I effect
Level 10: Netherite boots with Speed I effect
Level 11: chainmail and leather boots with Slow falling effect
Level 12: iron and golden boots with Slow falling effect
Level 13: Diamond boots with Slow falling effect
Level 14: Netherite boots with Slow falling effect
 

Upgrade attack you can equipment pickaxe:
Level 1: Stone pickaxe
Level 2: golden pickaxe
Level 3: iron pickaxe
Level 4:  nothing
Level 5: diamond pickaxe 
Level 6: Netherite pickaxe
Level 7: Stone and wooden pickaxe with haste I effect
Level 8: Iron pickaxe and golden pickaxe with haste I effect
Level 9: Diamond pickaxe with haste I effect
Level 10: Netherite pickaxe with haste I effect
Level 11: Stone and wooden pickaxe with haste II effect
Level 12: iron and golden pickaxe with haste II effect
Level 13: Diamond pickaxe with haste II effect
Level 14: Netherite pickaxe with haste II effect

Upgrade attack you can equipment shovel:
Level 1: Stone shovel
Level 2: golden shovel
Level 3: iron shovel
Level 4: ?nbsp;nothing
Level 5: diamond shovel 
Level 6: Netherite shovel
Level 7: Stone and wooden shovel with haste I effect
Level 8: Iron shovel and golden shovel with haste I effect
Level 9: Diamond shovel with haste I effect
Level 10: Netherite shovel with haste I effect
Level 11: Stone and wooden shovel with haste II effect
Level 12: iron and golden shovel with haste II effect
Level 13: Diamond shovel with haste II effect
Level 14: Netherite shovel with haste II effect

Shears:
Upgrade shears and you can use shears
Level 1: Shears
Level 2: Shears with haste I effect

Fishing Rod:
Upgrade fishing rod and you can use fishing rod

Level 1: Fishing rod
Level 2: Fishing rod with water breathing

Upgrade attack you can equipment sword:
Level 1: Stone sword
Level 2: Golden sword
Level 3: Iron sword
Level 4: ?nbsp;nothing
Level 5: Diamond sword
Level 6: Netherite sword
Level 7: Stone and wooden sword with strength I effect
Level 8: Iron sword and golden sword with strength I effect
Level 9: Diamond Sword with strength I effect
Level 10: Netherite sword with strength I effect
Level 11: Stone and wooden sword with strength II effect
Level 12: Iron and golden sword with strength II effect
Level 13: Diamond sword with strength II effect
Level 14: Netherite sword with strength II effect