Attempting to root and install Android 10 on Nexus 6P

[Xa3phod]

Hey folks. I am seriously stumped and I can't figure this out.
I want to install Android 10 on my 6P. I figured I would have to root it first. I installed TWRP 3.3.1.0-FBE-10-angler.
I successfully did OEM Unlocking.
I Pushed Beta-SuperSU-v2.67-20160121175247 and it seemed to install fine.
I reboot and its not there. It should be in the apps, but its not. What am I missing? Should I do Magisk? This is new for me and once I get it, I won't have to ask again.

I also have the PixelExperience_angler-10.0-20200101-0925-OFFICIAL. I have not installed this yet, but this is the image I want, I believe.

Any advice is appreciated.

Thank you

[Kilrah]

No point rooting if you're gonna flash another ROM just after, it'll overwrite everything. 

[Nayr438]

https://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928

 

If your installing a custom rom, you will root it after you install the rom via twrp

 

If you plan on using the play store, you will want to root with magisk instead. Supports Android 10

 

If you don't plan on using google apps supersu is fine, I think they actually moved it to somewhere in the settings manager.

[Xa3phod]

Makes sense. Will install a custom rom then root. Any info on how Android 10 runs on the 6p?

[Xa3phod]

Actually, here is the issue. I install the TRWP just fine and I am able to get into it. But, when I reboot and try to get into recovery I get the android robot on his back with the red triangle. I've followed the instructions to a tee, but still this keeps happening. I've reinstalled TRWP 3 times.

 

So, that is why I'm here. Someone funny is going on. Any help is appreciated.