The best way to do this would be to factory reset the device from the boot loader. You can do this by following these steps…
# Ensure the device is powered off.
# Simultaneously press and hold the. Volume up.
# While continuing to hold Volume up and Bixby, press and hold the. Power button.
# From the Android Recovery screen, select. Wipe data/factory reset.
# Select. Yes.
# Select. Reboot system now.