Why is render blurry?

Could you please clarify why the render is appearing blurry? It's quite puzzling to me as I've double-checked all the settings and they seem to be in order. Could it be an issue with the resolution? Or perhaps there's a problem with the graphics card? I'm really not sure where to start looking for the cause of this issue. Could you offer some insight into what might be causing the blurry render and how I might be able to fix it? It's really affecting the quality of my work and I'd appreciate any help you can provide.