I need some help

ok so i have been trying all day to enable developer mode on my Lenovo duet and I’ve followed every single tutorial i could find online. I’ve tried pressing power off + the volume buttons about 50 times and every single time, it either doesnt turn on or anything or it just brings me to the normal log in screen.

i dont have the keyboard to use so im fairly certain the buttons are my only option.

has anyone else had the issue of it just not ever going into the recovery mode ?