Comment You have no IP address. Your neighborhood does. (Score 0) 24
How are you going to host a game server on a home computer if you share your IPv4 address with other subscribers to the same ISP in the same neighborhood,[1] and the combined modem and router that your home ISP requires all subscribers to use lacks an option for port forwarding? Both of these are true, for example, of T-Mobile US Home Internet.
[1] Many home ISPs apply carrier-grade network address translation (CGNAT) to conserve IPv4 addresses since the worldwide exhaustion.