If you want to delve more deeply into the technical specificities and details of the TLS 1.2 and TLS 1.3 protocols, then you may consider downloading and analyzing two log files that have been captured with Wireshark (TLS12Handshake.pcapng for TLS 1.2 and TLS13Handshake.pcapng for TLS 1.3). You can use the files for self-study or for educational purposes.