This is the one I bought. No problems and you get two of them for 10 bucks.
https://www.amazon.com/Samsung-Galaxy-Charger-Charging-Braided/dp/B07X32HLBL/ref=mp_s_a_1_2_sspa?keywords=lg+G6+charging+cable&qid=1572087149&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEySFhKSFhDV043WUVFJmVuY3J5cHRlZElkPUEwMTQwMTg2MlJQM1VPTVozNFZRSCZlbmNyeXB0ZWRBZElkPUEwNDY0NTA3MUxWQVFERkVXUkpQSyZ3aWRnZXROYW1lPXNwX3Bob25lX3NlYXJjaF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl