You can use a shell script inside an Automator Quick Action to add the date of a file to the beginning of the file's name. You can also make this work with photos using the date the photo was taken from the metadata in the file. As a Quick Action you can easily apply this name change to one or many files at once.
When you are writing on your Mac, you don't want to have to take your fingers off the keyboard to move the cursor or select text. There are a variety of keyboard commands you can learn to make it easy to move the cursor by letter, word, line or paragraph, delete characters or words, and make selections.