Most of the difference is happening before editing.

Key changes:

• Angle: Your reference shots are mostly shot either straight on or directly overhead. Yours is at an oblique angle, which makes depth of field fall across the scene less helpfully.
• Aperture / depth of field: At f/1.8, too little of the dish is in focus. Stop down so the important parts of the food are sharp, and your lens will usually be sharper too.
• Composition: Avoid awkward crops like cutting off part of the bowl. The reference images also use the background more deliberately, while your angle leaves mostly table surface.
• Focus placement: Make sure the viewer’s attention goes to the key part of the food, with only less important areas falling out of focus.
• Lighting / contrast: Your background tone crossing behind the bowl/noodles hurts separation. Reposition the setup or background so the subject stands out more cleanly.
• Editing: The cool tone and deeper blacks can be refined in post, but they won’t fix missed focus, weak composition, or poor angle.

In short: change the camera angle, stop shooting wide open, compose more carefully, and use editing only to polish the look.