I will try give me some days and I will see, what I can make better.

id also suggest adding a lot more contrast, especially making the metal's highlight much brighter

keep at it!

Add some shadows. Make the shadows that are there bigger.

Have you any tips how I could add more deep into it?

It's too flat, I think.

I am not sure, if the grip turned out well, but I will made a metal version of it.