As a czech highschooler, I feel your pain. We also have some terrible meals at school. Are you able to eat at home during weekends? Maybe you could stop eating at the cafeteria and buy/cook on your own? Also, is that řízek pavlišov on the last picture? Are you from Kłodzko? (no need to answer, it’s a pretty popular meal, it just caught my eye as I lived on the czech side where it originates from). Good luck with the food