The best fix on an individual level is a VPN

nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s is right, your IP is all over the internet, it’s not a Nostr specific thing

Although, since this is a social media platform, it’s a bit more frustrating because ideally it shouldn’t be so easy for others to find and post it