Not getting support

Hi. I have been getting along fine with my MT however, lately things seem to be off. I have followed curriculum since January to a T, and yesterday I made my own activity for once. My MT seemed disappointed with this lesson and yesterday kept me after for like 20 minutes explaining how they are unsure how this lesson will be assessed, how it is supposed to go, etc, just listing things wrong. This is the first time I have gone off curriculum and tried doing something fun and academic and the MT just did not seem to like it. I feel like I should have stuck to curriculum or it would have been nice to get feedback as to how they would have done it differently. I just feel like im getting a lot of criticism for things I still haven't been taught and have no clue how to do. Even grading, MT assumes I know what to weigh my grades, how to write incident reports, etc and I literally do not as I am just a STUDENT teacher and this was not shown to me. Note, I was supposed to be co teaching and or observing them for the entirety of January, but instead of doing that they just had me start teaching right away. I feel like I am not getting support I need and I am just getting frustrated with the whole MT experience I cannot wait to have my own room because the criticism that I am given is not helpful.