How can I set Fortnite to automatically sprint when I move?

I play Fortnite on the PC with an X Box Controller. At the beginning, I was always automatically sprinted when I moved without having to press an extra button. For a few days I have to sprint an extra button press… I have no idea how to reverse this attitude. For me there's nothing more annoying than always having to press the extra button to sprint. Can someone help me?

On Settings In the first bar which is displayed scroll down somewhere stands by default sprint