Open hydra MTK Tool
Brand REALME
Model C15 RMX2180
On the Service Tab
Select Factory Reset Protection (FRP)
Click Auto Reboot
EXECUTE
It will be searching for MTK device
Now, connect the phone (must be turned off) to PC
To do this press & hold vol+- then connect usb cable
Wait until the process is done
Sana po makatulong... God Bless...