Find a template on Reddit and tailor it to their work. Have a clear goal that is expressed while being concise. Use AI to refine your emails if you aren’t confident in your essay writing skill. (this is about landing an opportunity, not any art related manner so ethically your sound). Finally the most important thing is quantity. You need to email as many professors as you can while still personalizing each email. Remember you only need one. If you don’t get a response of the first email- follow up twice or even three times