I need help to smooth a part with a bevel It's my first time using Blender and I'm not that good, however I'm doing pretty well. I make FNAF meshes and I made a bevel on this part, and when I try to smooth the surface it makes these weird markings you see in the image

I try my hardest to try to fix this and nothing is working. Now you may ask why  I want to smooth this part, and that is I am exporting this Blender project, and in the the program I'm gonna import it in, there is a limit of polygons, so I obviously need to smooth this one part.
You have some duplicated loops overlapping other ones.

Select them using Select Edge Loops and dissolve them.

Image below: