[Dismas]

You can use a VPN. It masks your identity from the router. I'd recommend either IPVanish or Nord VPN. There are many cracked accounts for IPVanish and Nord here. Just use our search function to find accounts.

A VPN won't actually mask your identity on a local network. Your external IP address may change, but your internal IP and MAC address will remain the same. A network administrator will be able to tell which device you're using, but will have a harder time identifying what you're doing (as your traffic will be encrypted).