Need help rooting. PLEASE HELP

[AC Question]

I have been trying to root my lg g4 h811 6.0 in order to recover deleted files. And all on-click-rooting programs have failed due to an unknown error, along with numerous usb connecting programs. Any other guides require me to enter the recovery mode... Which seems to not work. I have run out of options. Any concrete guides or answers would be much appreciated!