I don't know, do you think I'm wrong here? I don't think I should pay for the damage after accidentally spilling beer on a stranger's phone
But if you spilled the beer why won't you offer to pay for damages?
He started acting like he was the king of the world, I just had to get out of there before he got physical.
Accidents happen, and in some situations it's good when the other person can let things slide. However, you shouldn't refuse to pay for damages if you spill a drink on someone's phone, as that will make you seem irresponsible and careless. Even if the person upset you with their attitude afterwards, you should make arrangements to help pay for the damages.
Really?  It's not easy to track down strangers just to pay for their damages.
It might not be easy to find the guy, but you should at least try. It's really not honorable to just give up on trying to make this right.