Update:
thank you everyone for your help! For some reason my phone just never showed up on my computer but somehow, by some miracle, the phone miraculously and randomly synced itself to music bee. It doesn't show up as LG G7 but the device is there somehow. I have no idea how, it must've done it itself because every time I tried to add it the program wouldn't let me. But I can now view, listen and add music to my phone to mu hearts content (for now anyway).