I would't recommend he run LOS on KLTEVZW they keep breaking stuff run a stable MM rom for nowYou can find a ROM in the Android Development or Unified Android Development sections of this forum. I would personally recommend LineageOS but it's ultimately up to you.
such as AICP11
https://forum.xda-developers.com/verizon-galaxy-s5/development/rom-aicp-11-0-mm-t3357730
download rom and open gapps(6.0 ARM micro) to your sdcard
install rom zip
install gapps zip
reboot to system wait 15m for it to boot
remember the adage nightly builds are not for noobs
the complete lack of RTFM never ceases to astound me
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