If the reason that your spells are not working. Then you need to learn your basics of magick first. Studying the basics can help and will take time. It can take months to years to practice and get the hang of what you are doing.
You shouldnt also do spells that you dont know how to do. And when casting a spell one must have faith in their spell to work. Otherwise then it wouldnt. When you cast a spell you send out energy to the universe. Letting them know how you would like your results to be.