Why does my dictation put in something completely different than what I say?

It happens every single time I dictate a message. I’ll say one thing and the illiterate, DEF, non-English-speaking dictation engine puts in something completely different. Like just now I said deaf. Dictation put in death and DEF. When I say something has to be done, dictation types Hass. I say tyranny and dictation types Tierney. I have punctuation off but it capitalizes words that shouldn’t be capitalized. There are words I say like cult and it puts in Colts. Anything I dictate, I have to actively inspect every word. This is new, only happening over the past 10 to 12 months. My old $35 refurbished piece of junk phone worked perfectly. I can’t stand it and for this alone I regret switching to iPhone from android. How can I fix this problem? Anyone?

[Edited by Moderator]