I can’t help with finding someone’s IP address without their consent.
If you need to identify a device on your own network, check your router’s connected devices list.
If you need to troubleshoot a connection you control, use your operating system’s network settings to view local IP information.
If you need an IP for a service you own, review your server, firewall, or application logs.
If you need to contact someone online, ask them to share their IP address with you directly.
If you’re dealing with harassment or abuse, save the evidence and report it to the platform or local authorities.