WORK YOUR OWN RISK !!!!
1-> unlock bootloder,
2-> download ODIN
3->connect device in download mood.
4-> open odin click ap bouton .select boot.tar ( i all rady pach it by magisk) boot pach
5-> odin option clik and unmark all. and click start.
6->after pass unplug from usb volume- boutoon and power bouton press 7-10 secend device restart.
7-> not open magisk on home menu icon now install magisk v 23.0
8->restart device open magisk and unmark magisk update option. i sugest u keep magisk v23 in ur device.
-----root complete----
next step flash twarp........(twrp work on M02s and A02s both device????
9-> download twrp file. twrp for samsung M02S &A02s???? work on booth deivece
10-> extart it ,it contain 2 file 1.twrp.tar 2.service disabler.zip
11-> keep twrp.tar in pc and service disable.zip send your phone memory.
12-> device restart in download mood ,open odin clik ap bouton ,select twrp.tar , odin option bouton clik and unmark all.hit start.ok
13-> now volume- and power bouton press and keep hold 7-10 secend. device start recovary mood and open twrp,if device start power off and press volume+ - hold and plugin usb.
14-> twrp menu open click install, select service disable.zip flash it , go totwrp wipe menu click formatte data type "yes" hit enter
complete after device restart.all done!!