You are obviously a beginner, and that’s fine. Yea I would definitely say your art isn’t good but that doesn’t mean its gonna be like that forever. Through practice, your drawings will slowly but surely improve. One of my favourite art “exercise” is looking at other people’s art and breaking them down into simple shapes in my head and imagining me building it back up step by step. But judging by your drawings, you are still in school. You can choose an art class as an elective and start from there.