if your volume buttons are broken, you cannot use Method 1. You may need to use the Mi PC Suite software on a computer to flash the device.
: A hard reset erases all internal storage, including photos, contacts, and apps. Back up your data first if possible. Google Account How to Hard Reset XIAOMI Redmi S2
Here’s a clear, step‑by‑step review of how to hard reset a (also known as Redmi Y2 in some markets). if your volume buttons are broken, you cannot use Method 1