Write like you talk as it helps you sound more realistic and understandable to your readers. Try recording yourselftalking for two minutes, then transcribing it. You can correct obvious mistakes later, but writing that reflects the way you speak often showcases the most authentic version of yourself.
Also, after you write, read it out loud. It helps you ensure what you’ve written makes sense as what doesn’t flow, is confusing or is missing words will become apparent.