This is a cardinal rule when trading either crypto or NFT. You must never share your wallet’s private keys or seed phrases. No technical support staff or anyone else has any valid reason to request such. Thus, it is a red flag when anyone asks for your wallet keys. You can also take additional steps to secure your wallet. This includes storing your keys in a hardware wallet (cold wallet) which is not prone to internet attacks. You can also write your keys on paper and keep them in a safe place like a vault.