Backup Stock Recovery, Recovery and EMUI 8, before installing TWRP and ROOT

[Kernnell]

Hi guys

I want to install TWRP and ROOT to my P10 Lite, I've already unlocked the bootloader.

But before that I wanted to backup Stock eRecovery, Recovery and EMUI 8.
Is there a way to do that? (I'm not good with code, I'm not a developer)

I managed to unlock the bootloader with Huawei Multi-Tool v8, But I couldn't do anything else. Can anyone guid me thru the necessery steps for installing TWRP and ROOT without bricking my phone?

Thanks in advance for the help
You guys are awasome.