"Nice to meet you" on LG G6

[threehappypenguins]

I am attemping to use Shell to hopefully enable USB debugging on an LG G6 (LG-H873). I don't know if it's possible, and all of this is very new to me. The only command that works so far is dmesg. Not ls or cd grep or anything so far. I also don't understand how to "enable" --rawshell like I keep reading about. I have tried ./lglaf.py --rawshell and ./lglaf.py --rawshell (with two spaces) and lglaf.py --rawshell and lglaf.py --rawshell (with two spaces) and python lglaf.py --rawshell and python lglaf.py --rawshell (with two spaces) and python ./lglaf.py --rawshell and python ./lglaf.py --rawshell (with two spaces) and every time I get Hello, I am LAF. Nice to meet you.

What do I do to get commands to work? Is there any way to enable USB debugging? The issue is that my friend's daughter kept changing the lock screen password on her phone and then forgot it, and I am attempting to remove the lock screen without having to wipe the entire phone. I read that I can do that via ADB, but USB debugging must be enabled (it's not).