[help] rooting infinix note 4 android 8.1

Hello,
my phone updated to oreo 8.1, and i don't know how to root it
it's infinix note 4 x572 (build number: X572-H5312CE-O-180531V117 )
i tried all rooting apps in android like kingroot,and failed
tried automatic pc apps like kingoroot and dr.fone, and failed
tried extracting the boot.img to use it in magisk, but can't do it ( miracle box keeps showing 'unstable comport')
i'm getting really frustrated, please help, thanks