In conclusion part you are not allowed to add new idea. Just state the main point in every paragraph and make solution/recommendation.
iI do feel my essay sounded repetitive with telling the main points again in such a short essay
It doesn't matter while you repeat or summarise the main point of your body paragraph in conclusion because we have to do so. As the dictionary says,conclusion means something you decide after considering all the information you have. For the meaning, we can analyse that it just assemble and make a general point of all we state before. By doing so, adding a new idea is forbidden.
Many suggestions also provide on on-line learning. Here I wanna share one from Simon IELTS website, Simon also writes to repeat and summarise when we are constructing a conclusion in IELTS. see
However, in this occasion I just try to share a bit, for further understanding I suggest you to read from another source. Please correct me if I'm wrong. :)