indeed, I want to install UT on it

I'm a complete noob trying to understand how to root, flash, ect... I would like a mentor please. A couple years back, I brick three Kyocera Duraforce phone in two weeks just trying to root those phones. Now I think my phone is amazing and I don't want to brick it. I've installed Ubuntu, Kali, Parrot, Subgraph, Qubes, ect on laptops and all, but i'm lost with phone.

If someone has the time to guide me, it'll be really appreciated. Yes, I've tried a lot of videos off youtube.

regards