To perform a factory reset, most Android devices have a features where you can hold down two or more physical buttons at the same time while powering the device up to go into a menu where you can select factory reset. Such as Volume Up + Power button. Unfortunately I do not know what device you were using so I don't have enough information to help you thoroughly. Hope that helps!!!!
For more information please leave your Android Device Model Name below in Comments..!!
For more information please leave your Android Device Model Name below in Comments..!!
WRITER : SAADI GROUPZ