I would suggest instead, if one really is interested in the topic of networking and port scanning, to set up a lab environment, either virtually, or physically.

I would suggest instead, if one really is interested in the topic of networking and port scanning, to set up a lab environment, either virtually, or physically. This is not very costly, unless you need to scan specific enterprise systems that can not be emulated, and are beyond ones price range - to buy to learn. There are also platforms like tryhackme, hackthebox etc., that offer both free and paid networks, on which one can legally scan.