hard reset a Huawei Y7, follow these steps:

Huawei Y7

Turn off the phone.

Press and hold the Volume Up and Power buttons together until the Huawei logo appears on the screen.

Release the buttons and wait until appear the recovery menu.

Use the Volume buttons to navigate to "wipe data/factory reset" and select it with the Power button.

Confirm selecting "yes" on the next screen.

Wait for the reset process to complete.

Select "reboot system now" to restart the phone.

Note: This will erase all data on the device, including apps, contacts, and media files. Make sure to back up your important data before performing a hard reset.