Stop saying x placement equates to a cheater/shitty person. Any one of us is capable of these actions. It depends on you and your mind, not your astrological placements. Not every Cancer placement is loyal, not every Gemini or Sagittarius is a cheater.
You are your own person, you use these energies the way you want. We all have our downsides.
Using the negative sides to your placements as an excuse for your actions is ridiculous. Use the positive sides and grow up. Be responsible and try being genuine. It doesn’t hurt.