Sorry My bad
I tried roooting it with all those three options :
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1st SuperSU : It didn't root
2nd phh's superUser : It didn't root either
3rd Magisk 11.6 : It didn't root either ....
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but finally flashed magisk 12.0 and finally succeeded though
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HOPE IT HELPS OTHERS
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And @dic1911 : Thankyou so much for the rom I switched back from your XENON to XOSP your ROMs are awesome
Bro I wanted to talk to you ...I have some queries ....can u give your telegram id?...or pm me @adiv1899 @Gshrestha