Become a better writer by using spoken language
Written language is no different than spoken language. On paper you do not have to do something special to impress your reader, you do not have to pack concrete stories in complex sentences and difficult words.
We are all storytellers, we as humans have been that for hundreds of thousands of years. And we still use that skill every day at work and when making social contacts. This ancient talent can also be used in writing.
So pay attention with which anecdotes about your work or hobby you make an impression on birthdays or during a chat with your neighbour at the campsite. It might well be that these stories can make your texts more powerful.