In 8th grade, I had a typing class. I discovered I am not a good typist. Oh, I can type at a high speed and since keyboards and electronic simulations of them are everywhere, that is a plus. However, in the class, we lost points for each error. I always had plenty of errors. I still do. I fat-finger, hitting two keys at the same time. I reach out and over-do the reach or under-do the reach. I accidentally drag a finger tip across several keys, inventing a new but useless word.
I tried electronic listening to my spoken word but the machine managed to misunderstand what I said and typed words I didn't even recognize.
I find the spell/grammar checker in Google Docs is the best one I have worked with. It and I disagree sometimes but I always know best, of course. So, I tell the app to just ignore what it labels as an error.