I guess you made this decision after full consideration.
First of all, you’d better back up all data on your phone to avoid data loss.
Then, you can root your LG stylo 6 by using KingoRoot app, installed on phone. Or you can adopt SuperSu. In this way, you need to install Custom Recovery on your phone in advance.
Detailed tutorials here: https://www.guidetoroot.com/root-lg-stylo-6/
https://www.minitool.com/android-recovery/how-to-root-your-android-device.html