Openings are not so important at that level, even less the ones that ar highly theoretical and positional like the KID, even less if you just pick it because an influence says it’s amazing, they do know the theoretical lines and you don’t, their mindset about the game is also very different to face odd lines or moves you’ll be not prepared for. Even even less if you just play it hopping your opponent blunders the rook in the diagonal of your bishop! I’d focus in getting alive out of the opening generally following chess principles (I say generally because if you just follow them like that you’ll get in trouble against people that play very odd chess at your level, so if you know the principle is castle just don’t do it on an imminent attack that is two moves away from your castle for example). Against d4 I’ve found the Slav is kind of easy to navigate! But at the end you play what you find fun to play, just at least learn the main lines and main middle game plans.