Need help on how to root my Samsung XCover 4 G390F - Android Q&A, Help & Troubleshooting

Hello, I've seen this post https://forum.xda-developers.com/android/general/samsung-xcover-4-sm-g390-twrp-magisk-t3927209 and I've tried like everything to root the phone. I don't understand a lot of this area so I'm just following everything I see on the article and even on youtube but nothing seems to work. The main problem, as far as I know, is that I've tried used odin 13, even odin 10 and it just doesn't flash on it. So I've searched like why is it always failing and some guy on youtube made a video about opening powershell and try to work from there but it doesn't work anyway. Is it possible to get some help? Or is it just impossible to root? Sorry again cause I'm kinda newbie on this but I've searched so many pages already that I'm probably going go give up soon.
PS: I tried to install twrp and magisk but the only model available is Xcover 3 and not XCover 4, tried also kingo root, odin and the powershell booting. Everything has an error. I already have USB Debugging and OEM activated, of course. Thanks in advance

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@duckkz
Because your goal is to get a rooted Android, then take note that neither TWRP recovery nor Magisk framework must get installed ( flashed ) before. You can achieve this with running a couple of ADB / Fastboot command.

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jwoegerbauer said:
@duckkz
Because your goal is to get a rooted Android, then take note that neither TWRP recovery nor Magisk framework must get installed ( flashed ) before. You can achieve this with running a couple of ADB / Fastboot command.
Click to expand...
Click to collapse
My goal is to root or to get downgrade to android 8. I couldn't get it on ADB neither fastboot. always error

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To root Android as 1st thing of all things these requirements must be fulfilled
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Next step is to install the USB-driver matching your device

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jwoegerbauer said:
To root Android as 1st thing of all things these requirements must be fulfilled
Next step is to install the USB-driver matching your device
Click to expand...
Click to collapse
I've done what you said. I've gone to the article and used odin v3.13.3 and boot it on the phone. It still gets an error.
<ID:0/004> Added!!
<ID:0/004> Odin engine v(ID:3.1303)..
<ID:0/004> File analysis..
<ID:0/004> Total Binary size: 2599 M
<ID:0/004> SetupConnection..
<ID:0/004> Initialzation..
<ID:0/004> Set PIT file..
<ID:0/004> DO NOT TURN OFF TARGET!!
<ID:0/004> Get PIT for mapping..
<ID:0/004> Firmware update start..
<ID:0/004> NAND Write Start!!
<ID:0/004> SingleDownload.
<ID:0/004> sboot.bin
<ID:0/004> param.bin
<ID:0/004> FAIL!
<ID:0/004>
<ID:0/004> Complete(Write) operation failed.
<OSM> All threads completed. (succeed 0 / failed 1)
Any help?

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up.. no one has any idea?