Everything I write feels uninspired, generic, and fake. I keep second-guessing every sentence. I wish I could just be genuine and stop thinking about how it’ll sound to others.
It’s July. You have plenty of time.
Concentrate now on getting your thoughts down on paper. Don’t worry about word choice or word counts; just get the ideas down.
It will be MUCH easier to edit than to write, so concentrate first on the ideas. You have lots of time to go back and edit later.
Think of something that you find really cool/fascinating/awesome and write about it. Doesn’t matter about the prompts. Just write about something you value. Keep doing that with a few different topics.
Now go back and read the prompts. Then read your various essays. Anything click as a possessed link? Then go with that one. You just need a nod to the prompt, not a full on answer.
Try that and see if it helps.
Thanks. I’ve been free writing a bunch of random stuff and I think I’ve landed on an idea that’s pretty interesting. I’ll try to write a bunch of stuff headed in that direction and see how it goes. 
Make it personal, unique and interesting. Throw in some passion and a few big words. Grab the attention of the reader within the first 15 seconds.
My best advice on essays. Don’t make the mistake of writing your essay about what you think schools want to hear. Write your essay about something you are passionate about, and make that passion abundantly clear. Admissions people read hundreds to thousands of essays each year; fake passion is easy to spot and true passion is hard to fake. Don’t try and fit yourself into what you think a college is looking for. It works better when you present your honest, true self and let the colleges decide if you are a fit. Good Luck!
Google “Hack the college essay” and you should get some good ideas.
I’ve seen a lot of folks giving advice that your essay should be about something you are passionate about. I don’t think you need to do that. It should give the reader insight about the type of person you are, and by extension what you can contribute to the school and campus. Neither of my daughters wrote about their “passions.” Rather, their essays offered a window into the type of person they were and are.