how to make background sharp like the foreground?

Tried different things, but the background is still blurry.

Prompt: Photo of a Caucasian woman, age 23, with hazel eyes and long, wavy red hair. She is wearing a vintage floral blouse and beige trousers, a delicate silver necklace, pink eye shadow, black eyeliner and lipgloss. She is standing, looking at the camera in a brightly lit cobblestone plaza, with fountains and crowded outdoor seating. Shot on Canon EOS 5D Mark IV and EF 50mm f/20L lens, everything in sharp focus, deep depth of field.

Thank you.