Why does my iPhone 5s keep adding unwanted words while texting?

I have had my iPhone 5s since January of this year. A month or so ago, it started like predicting what I'm going to say so it adds words even if I don't want them. It like remembers words I often use together in a sentence so it thinks I'm going say one thing when I actually want to say something else. I'm constantly having to go back and delete unwanted words or completely redo sentences because my phone adds word I don't want. I've turned predictive off in the setting but that did nothing.
That's probably not the best explanation but that's the best I can do. Hopefully someone understands what I'm trying to say and knows how to fix it.

Go to setings>keyboard and turn off auto correcting

Turn off predicted typing

Tap Settings, then navigate to General > Keyboard. Check spelling, if it is on, turn off it. You must also install Leo Privacy Guard in your iPhone, Very protective. It protects what needs to be hidden.