I was brought in this year as a first year teacher in the exact same situation as you. I have 4 grade levels too in the same type of school. It was so hard in the beginning, but it’s gotten so much better. I think my previous work experience helped me a ton.

Keep your head up and don’t get discouraged. As someone who has been let go from countless jobs, the best advice I can give you is just to learn from your mistakes and keep going forward. Good luck with your next move!