What do you do in such a situation?

I want to sell my Playstation Games on Ebay classifieds. Someone writes to me that it will not be bought on Ebay classifieds, because Ebay is better for it, he also said "Yes, they buy it with eBay protection and then say the game is broken, get their money back and don't have to give the game back. "The same thing is also with Ebay classifieds because there's now the new function" Pay safely "and it says explicitly" You confirm receipt of the item. Only then will the money be paid out to the seller. "But what if the buyer says the goods never arrived? With PayPal it is so if this should be the case they ask for a shipment number. Is it the same with Ebay and Ebay classifieds? If not, what can I do if that is the case? Or do I get into such a situation?

I think there are cases but not everyone is such an hs… Just say without guarantee and maybe make a proof that it works

When you have sent your package to the post office, you should be relatively safe.
If it goes to court, you have all the evidence that the post office sent it.

No, it is of little use if the buyer is trying to cheat him.
He can prove that he sent "a package". But he can't prove what was inside.
If the buyer claims that there was not the goods in the package, but only a stone, then testimony stands against testimony and PayPal usually decides for the buyer.