Missing Faces for Models Even After Fixing Normals

I’ve looked up everything I possible can but can’t find a single answers for how to fix my problem, so this is a last-ditch effort. I made this model in blender and exported it as a FBX file and imported it to Unreal, I noticed that some of the faces were missing so I googled it and found out it had something to do with the normals, (Note I’m pretty new to using blender.), So I did what it said I went to edit mode selected it all and pressed shift+n. After doing that I check the orientation of the faces and everything is blue, yet when I import it to Unreal while some parts have fixed there’s still a large chunk of it missing faces. So out of curiosity I did the same thing with one of my other models that I was struggling with, and it worked completely, and all the faces are fine. So, I need help figuring out why It’s still not displaying the faces correctly even after “Fixing Them”.


Try to set the material “TwoSided” option true