Shading problems,tris mesh with black marks in Blender I tried to do this low poly beretta that I triangulated and applied normal, roughness albedo and specular maps but in some points I get those black shades.
may it be because of an unclean construction process?
I beveled it and perhaps it was the cause but I really don't know
here the pictures I made

Renders:





Topology screenshots:
Looks like Shade Smooth is on. If that is the case, try switching the shading to Flat (Object Mode > Right Click > Shade Flat), or turn Autosmooth on (Object Data Panel > Autosmooth).