Don't let other people do your work. That will just defeat the purpose of school. You said you weren't the best at writing essays, so keep practicing. You wont get better if others do it for you. Don't let this make you upset or sad think of it as encouragement, you got this! I love Christmas so some ideas could be haw the Christmas season feels like. You could talk about decorating a tree, putting lights on your house, the snow, that "Christmas smell" in stores and how everyone is filled with joy and happiness around that time. Here are some tips: Start with a thesis (this is what your whole essay will talk about) include three examples like i just said and in each of your body paragraphs talk about one example. Once you do that end will a conclusion paragraph (this is just rewording your thesis and summarizing what you talked about). Good luck!
If he can explain something which is very complex, in simple terms, he would be able to be more clear and concise. I am unsure of the context of what he is writing- but I hope this helps!