Mending Rebalance

Mending Should be more rarer, like spawning in Ancient Cities, Abandoned Snowy Villages, Woodland Mansions (that are in a secret room), And the libraries from the stronghold. And 1 experience orb that you collect should be equal to 3.5-4.5 durability, and to make it more better, theres a 10% chance that it gives you (for 1 experience orb) 1 durability.

(and also if i said structures that are already in the game then please say in the comments!)