Save typing time, you can set up your own autocorrect words for common things you write. The one I use is @@ everytime I type it, it changes to my email address, which I seem to have to type a lot, particularly logging into websites etc on my phone. How to set it up – go to settings, general, keyboard, text replacement then use the + to add one. If you can’t find it and are on an old ios it may have lived in general – accessibility at one stage. Be careful about the shortcut, don’t do one letter and try not to use something you would have to type normally. You can add more but don’t go overboard or autocorrect will annoy you.