I once lost a coin from the Airdrop result. At that time I gave me the wrong wallet address and what I gave was a private key. I saved my private key in WPS Office and mixed it with other data.

So it became a mistake that I thought was very heavy. I was lucky because inside the wallet there was only one type of coin proceeds from Airdrop. Now I keep it in a place that I think is safe. I have two computer devices and that one serves to save the data. And now I have minimal errors and the computer also can not be hacked.