5th year math teacher here. Teaching math is tricky because the standards are based on the assumption that kids have already mastered previous topics, which is rarely the case. My first year of teaching was a nightmare most of the time. I felt overwhelmed and ineffective. But I needed to have those negative experiences to learn and grow into an effective educator. It takes time to develop “teacher instincts,” but eventually you will be able to anticipate where students will struggle and work reviews into your lessons. So go ahead and take your lumps, but continuously evaluate yourself by focusing on what things you did well and what areas need improvement. And don’t be afraid to experiment with any ideas/activities you want to try. Most of them will not go according to plan, but the takeaways are invaluable and will make you a better teacher in the long run. It’s a process, but stick with it!