Is having my essays proofread inappropriate? English is not my first language. My pronunciation and grammar are not perfect. I tried to write an essay in my own words. After that I asked for help from my friend to proofread the essay.

She told me I’m cheating to have someone help in this way, because when I submit the essay, the words and grammar will be different than what I wrote (the first version of the essay has too much incorrect grammar). That’s why she will report me.

I don’t think I am wrong because the tutorials in every school are still using proofreaders to help students.
The instructor just said that we should be using sources from class to do the essay, and to cite any other sources. The policies don’t say that I can’t use proofreading.
So what do I have to do? Will the report affect me in the future?
The only correct answer is to ask your instructor.

As a general rule though, proofreading is encouraged. In the professional world, proofreading (or copy editing) is a normal part of scholarship because the goal is to make the final paper as neat and polished as possible.

Sometimes it is appropriate to cite help you have had with a paper. If there is legitimate contribution and collaboration, this is often done with giving co-authorship. If a specific idea is used, this is often in the form of a footnote. For proofreading, this is sometimes in the form of an acknowledgement; sometimes proofreaders are not recognized at all.

Unless your instructor specifically prohibited proofreading, this is not cheating/plagiarism.