If you are playing against stations, and they never fold any flop, don't c-bet without equity. It's easier to just let the game come to you.
If you have a losing image, don't c-bet without equity. It won't work. Bad/inexperienced players actually base decisions on stupid shit like "he isn't hitting any flops, and he is losing every hand. I have to call with bottom pair here, this guy can't win a hand."
If you are losing every hand, and you are starting to get frustrated, just check/fold to passive opponents and stations when you miss. Trust me it's less frustrating and a game management decision sometimes.
If you are in one of those games, where your opponents aare loose AF and they call everything, don't bluff. It's not gonna work. Only c-bet if you have outs like flush draws/straight draws/combos, etc. Don't be c-betting and barreling some whale who never folds with only 2 over cards and no equity to speak of