Please fix-up this robot model

This is only the 4th thing that I ever made in 3D, so it has a lot of problems and ngons.

Could you please fix it up the best you can?

Also, maybe it could use some higher resolution procedural textures of the same camouflage pattern?

https://1drv.ms/u/s!Ap6t_YOv62EQclWSsOb9ODCCqhw?e=fA3wJU

this does not look like somebody’s 4th model

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It is.

I plan on re-making it even better than before, now that I have so much more experience.