wireshark tls connection, how do i decrypt the information sent to the client only?

Question

I am looking at a connection that is going over Wireshark, it is using TLS to encrypt the data. I'm no expert in TLS, but from what I understand, even if the client does not have the "Master Private Key", it should be able to somehow decode the messages that are being sent to it from the server without a private key, otherwise it wouldnt be able to know what kind of data it's receiving. In wireshark, I see a "pre-master-secret" and from what Ive gathered I need the private key to somehow decode that. I'm just starting to get super confused, basically all I want to do is read the raw hex data thats being sent to me from the server.