P2P trading is a great way to make some profit. Although you can trade skins with another player, you can also sell your unused skins for money. All you have to do is find a good P2P skin trading platform for CS2 and begin the process.
You will list the skin for sale and wait for someone to become interested in it. Obviously, you have to set a price for it too. Once someone wants the skin, they can withdraw it and you will receive money at the end of the operation. It’s a good way to make some extra money, especially when you do not need the skin you are selling.