iphone keyboard and eyeballs

For past 5 years my keyboard skills on an iphone never improved...I thought Apple would be smart enough to figure it out...I am constantly having issues with the space between words....I may have 3 to 6 words jumbled together as I type because my iphones don't see or recognize that I am hitting the space bar.

I have the same problem on multiple iphones over the years, OS and such...never and issue with google phones. The other oddity is my eyes are constantly moving and if i look at a letter that is not the letter i want to type iphone believes I should be typing that...also the B and N letters are used as spaces....also i have taken video to verify i am pressing the space bar...something is up...HELP is there a smarter keyboard? Very few words that I type end in B why is iphone so stupid to believe i just keep making up words and some of my words are 44 characters long. just dumb