Can't you just disable the auto-correct? I did so years ago on my computer, after Microsoft insisted on spelling words incorrectly that I had spelled correctly.
I believe both their spelling checker and their grammar checker had got better since then, but having gone to school in Scotland at a time when grammar was most definitely taught, I need neither.
I bewail the demise of the apostrophe in all words that should have one. Anyone who finds the rules difficult, must have had a very poor English teacher.
Anyone able to explain why we say, "Aren't I?" After all we conjugate the verb: I am, you are, he is etc. but I have heard both myself and others say, "Aren't I right? although we probably all would say, "Am I not right?"