Telling anybody to install third party shit to fix first party shit should have been a hint to you that what you're saying is laughable.

Throwing random nonsense about 'general/keyboard' settings (that don't exist, btw) because you yourself can't think of anything specific should have been another.

The keyboard, specifically the Autocorrect, is fucked and has progressively worsened over the past 5 years. It's atrocious today. This is a first party problem that shouldn't need 3rd party solutions, end of story.