Who gets eth gas fees?

Whoever creates the contract that requires ETH gas fees to be paid. When someone creates a new Ethereum smart contract, they can choose to include a gas fee that is payable by anyone who wants to use the contract. This fee goes to the person who created the contract, and is used to cover the cost of executing the contract. So if you want to use a contract that has a gas fee attached, you'll need to pay that fee yourself.