How much of the look is the Colorgrading

I sometimes film at locations similar to the movies i love, my camera is okay, my lenses are okay the light is comparable in the wide shots but something is always missing to get it to look like the highend stuff.

What colorists can you recommend

and what are tricks in Colorgrading that you wish you knew earlier?

I know a big part is set design and costume, if the colors on set are already beautiful where is not much that can go wrong.

But sometimes there is something off. I often watch cheap indie movies mainly to learn, why exactly is this movies looking worse than another movie.

There are many colorists online that recreate looks and i wish i knew more. Any Recommendations?