squirrel hunting breakdown [not for people who get sad easy]

well i was in my back yard today and i saw a squirrel in my garden so i grabbed my pellet gun and i ran at it, it ran up tree and stopped on a branch around 10 feet from me i shot at it and hit its leg it squealed and fell and i ran at it and it kept circling the tree when i, went near it i shot it again it didnt die it got across fence and i hopped the fence but then it went back over again. well it climbed back onto the tree and i shot it in the head when i circled around my gate to get to it i noticed it wasnt dead i shot it just below the eye and blood was poring out if it and i shot him again in head at point blank range and it still was alive finally i ran out of bullets i ran inside and grabbed more when i got back to it i noticed it was still alive i shot it in back of neck and ended it. normally i wouldnt care i killed a squirrel but seeing it suffer like that with blood pooring out if his face where i shot him made me have a breakdown and cry i burried him and i swore i wouldnt kill till i got a gun to kill instantly. you see i live in a city so i cant shoot my shotguns or rifles so i had to use the 177 air rifle. anyways i had to get this off my chest cause the thought of the squirrel is eating me alive and im depressed now if youd like whoever reads this ill post of pic of it .