I have va broken phone, and Find My Phone is disabled. I am replacing it but dont know how to erase it without the Find It feature or being able to turn it on?

Find My iPhone / "Find My" can be turned off only if...

1. You have shared your Apple ID & password with someone
2. You have removed the device from your account after you erase it, Activation Lock will be turned off. This allows another person to turn on and use your device.
3. If you're using iCloud and Find My [device] on the device, sign in to iCloud.com/find or the Find My app on another device, select the device, and click Erase. After the device has been erased, click Remove from Account. This will turn off Find My.