I have yet to meet anyone who was totally aligned with good or evil. There are good and bad Witches just like there are good and bad teachers, bookkeepers, cooks, plumbers, and doctors. The simplest misconception is the idea that Witches are more powerful than they really are, especially when it comes to money and gambling. Granted, I have witnessed an occasional prosperity spell that was very effective. However, if I was any good at picking lucky Lotto numbers I would have done it for myself a long time ago.
Misconceptions also abound around love spells.
Love is a magical phenomenon, no doubt about it. Goddess help you when it catches you by surprise. It's not a pretty sight. However, love spells are widely recognized as being foolish and highly unethical. Whether a love spell would work or not is irrelevant.