I mean computer keyboards lol. Why don't they just go a-z?!
i think it's been designed in a way so the letters you would use to type a word are closer together so you can type faster but if it was in alphabetical order every letter you wanna type would be far from the other because no word has its letters in the same order as the alphabet.
The QWERTY keyboard layout was designed so that successive keystrokes would alternate sides of the keyboard so as to avoid jams in manual typewriters. First designs of manual typewriters using keyboards with letters on alphabetical order could not keep up with the speed of fast typers and the QWERTY keyboard layout was designed to reduce jamming. The QWERTY keyboard layout survived the era of electrical typewriters and the digital age because it was the first standard design. I put this answer together from different sources to give the most accurate reason for why the letters are arranged the way they are.
