TRY ALL At Your Risk
[To root Realme 6 you need to unlock bootloader first. After unlock bootloader just follow the method.
I am not responsible for any kind of stuck or bootloop issue or hard brick.. This file was tested in my own device Realme 6 RMX2001
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svetius

First Enable OEM UNLOCKING and USB DEBUGGING on Developer Options)
##HIT THANKS BUTTON##
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WARNING###
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DON'T UPDATE THE SOFTWARE OF YOUR DEVICE IN ROOT *
[Realme 6 - Root]
0. For unlocking bootloader type
fastboot flashing unlock
1. Download realme6_root.zip
2. Enter fastboot mode using deeptesting_apk
3. Type fastboot flashing unlock in ADB
4. Select yes on your device to unlock bootloader
5. Type fastboot reboot
6. In your device turn on usb debugging
7. Type adb reboot bootloader
8. Recovery would boot into fastboot mode ( i.e you would boot into fastboot mode with recovery mode UI)
9. Type fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
10. Type fastboot flash boot boot.img
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Note:
Download Link-
https://drive.google.com/file/d/1--U0QfVZpNmOI9v7mA6ZsSghw42NBykv/view?usp=drivesdk
-(NEW UPDATED) Deep Test- Apk-
https://drive.google.com/file/d/10Uy34zbKhic89zGRhgJwAfGCeXTCMR4C/view?usp=drivesdk
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# WARNING. #
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*Don't Use Old Boot IMG and Vbmeta IMG In (B47 Update)
Here Is New Boot.img And New Vbmeta Img (B47)
Boot-
https://drive.google.com/folderview?id=1BTIKFbHgt1H9sX-0ak2ls8jETcq80evu
Vbmata-
https://drive.google.com/file/d/18AUHwdBRrUL6L6NeHnWENXWGhoyYzzgZ/view?usp=drivesdk
Do it your own risk, We are not responsible if anything goes wrong
Unlock bootloader will erase all your internal storage, So take backup as well
~Credits: mekarmur

,arvaaz
NEW APK WORKING