Can the nikon l820 change the format of the picture it takes?

I have a nikon l820 and I have noticed that the quality of jpg picture files are not very appealing. It gives my pictures a very bad pixel grainy effect and I was wondering if the format can be changed from jpg to raw?

Nikons typically have a Small, Medium, and Large setting, as well as a Basic, Normal, and Fine setting. The best quality is typically Large/Fine, while the lowest quality is Small/Basic.

However, you could have your ISO set too high, which could result in poor photos.

Unfortunately your camera has no RAW setting.

Your question is covered in your user manual
Please take the trouble of reading it. The PDF file should be provided in the supplied CD, else download it

Nikon L series are the lower cameras & many of them are outright junk
& no, your camera is not equipped to save in RAW

Grainy images is normally from high ISO settings. Select the lowest possible ISO when ever possible

I have a sharp as a tack 16x20 picture taken with JPEG and a "bridge" camera. I use "AV" most of the time and a tripod so I can use high f/stops. I try not to exceed ISO 200 and sometimes use ISO 400. I set my cameras to maximum resolution and leave them there. I can always "dumb down" a picture file, but never go the other way.