Please Stop Changing My Regular Words To Misspelled Versions! Juat, Thru, Nor, Fir, Thr And Mr.

I love your app. I have been using it for many years on both Android and iOS but there is a problem. These words won't stop coming up "Juat, thru, nor, fir, thr and Mr". I understand Thru is short for through, but it's not a word that I ever use but it continues being offered up. I also never use Mr, but instead of being offered "Me", which is the word that I actually use a lot, I am offered Mr. The rest are clearly mispelled words but SwiftKey won't stop changing my correctly spelled words to. Also, can you please do something about the Comma button? I end up pressing it constantly, when I do not mean to. Maybe you can give us the option where we have to double tap it or hold the button for a few seconds, before it is typed out.