It is not advisable to share a fake live location on WhatsApp, as it can be considered as deception and it can also put the person you are sharing the location with in danger. Moreover, WhatsApp has implemented strict security measure to detect and prevent this kind of behaviour.
However, if you still want to do this it can be done by using a third-party app that allows you to fake your GPS location. These apps typically use your device’s built-in GPS to track your location, and then allow you to manually change your location to anywhere you want. Once you have changed your location, you can share your location with a contact through WhatsApp.
It’s important to keep in mind that using fake location is illegal in some countries and can lead to serious consequences. Additionally, WhatsApp has strict policies against this kind of behaviour and may ban your account if you’re caught sharing a fake location.