TIFU by trying to find the owner of the money I found on the ground

So let's start with this, i have been as poor as a brick the past few years, so much so that sometimes food becomes scarce and no for any internet to do any of my due homework. Even rent can become too difficult that we get kicked out. Today, when I came back home, i found about 800$ just spread in front of the house. it's an apartment complex, so i thought it must be a neighbour that lost so large of a sum.

I felt that it's too large for it to be a little mistake the owner wouldn't care about, and the pain inflicted on whoever lost it can be severe, especially when i recalled a similar situation when i lost money that i needed for survival, which resulted in one of the most depressing weeks i have ever experienced.

So i did what i thought was right, i collected the money from the ground, hid it somewhere near, and then put a piece of paper in the entrance with my number for anyone to call if they have lost money recently. I did this while fighting every devil in my head about keeping it and calling it a day. especially due to the fact that for me, This is a HUGE sum that could solve so many problems. Also, that this is more than all the money i currently have combined. But the depressing weeks i have been through due to the money i lost kept coming back to the memory, reminding me of how much this money may be needed for its owner.

Maybe that's the only money the owner has. Maybe they need it for medicine. Maybe it's the only money they are getting in months. I kept thinking of these reasons not to take it, which are projections of my personal problems throughout my lifetime.

Hours go by, someone calls. It's about the lost money, so we said we should meet in the front of the house. I ask him how much was lost? He says 1000$. And he describes a place that's close to the lost money. I was confident that it's his because everything checks out, so i hand it to him from the hidden place. Telling him all i found was the 800$ so he says he'll be looking up the rest, then i just told him where exactly i found it and went home.

Hours later, i get another call. He's accusing me of pocketing the difference, and then he threatened me to call the police. At that moment, i just wanted to punch my guts. I felt terrible. Neither have i gotten one penny from this, nor is the gesture of taking from my time to help is recognized. This is the worst outcome that i never thought could ever happen after acting morally. Now i think every devil in my head is winning the argument, i should have taken the money regardless of the compassionate delusions i had.

TL;DR:

Tried to help bring money that i found to its owner, then got accused of stealing some of it.