RAW, jpeg, enhance our not

There is a lot of discussion on these subjects. It is my opinion that you use RAW, and enhance the processes suggested result. There are times that I use the jpeg result provided by the camera.

All digital images start with a RAW file! The most common method to view an image is jpeg. Out of the camera jpeg image has had the RAW file processed by the camera software/firmware engineer's and technicians. Frequently It is possible to improve the image. The most common improvement is getting the horizon straight. Next is the lighting, especially in back lighted photos.

When you use the RAW file you are in control of all aspects of your development. That's why is called the digital darkroom.

So yes you can, must, improve your images.

"If you are using near-universal JPEG files in your camera, your image has already been enhanced to a certain extent by the camera’s built-in software to give you what the manufacturer has decided is the best result from the data captured by the camera." 

https://www.picturecorrect.com/tips/is-enhancing-my-digital-images-really-worth-the-effort/