<human>: Could you distill the essence of the text into 1-3 sentences?

I'm an undergraduate student in engineering. Last summer, I was offered a position by one of my teachers to do my Senior thesis with him ***over the summer.*** What ended up happening is that he dallied around and didn't give me the details of what I needed to do until late July, meaning that the researched I needed to do didn't get finished before the semester started in August.

Once the semester began, my ability to do research went down to 0 as the lab I had to use was only open between 8am and 4pm, times when I was busy in class and didn't have an open block to go in and get my work done. As such, my data is quite limited, something that I'm really unhappy with but was honestly outside of my control. There was no way for me to get more data without skipping classes.

I also didn't have any guidance for this project. There was no grad student to advise me. No teacher to walk me through what I had to do for different experiments. I had to muddle my way through everything, often times doing things that I'd never done before (which I explained to him.)

Now he's really annoyed that I did so many things wrong and that have so little data. I don't know how to deal with the situation without being rude to him. He keeps asking why I didn't do this or that and I don't know how to politely say "because that's what my lab classes taught me! I didn't know it was wrong!"
<bot>: I don't know how to politely deal with my thesis adviser who expected me to know a lot of things that I was never taught.