Smoothing imported mesh (fbx)

I am not a modelling expert and have imported a purchased model as FBX. However the polygonal geometry is apparent and this will definitely not work.

I assume this has something to do with smoothing normals and or converting to subdivision surfaces?

Is there anything I can do via the Material Graph inside UE?
Should I import the FBX into Blender for modifications and re -export?

Any feedback welcome!

Hi there! It can be the case that your fbx has NO information of smoothing groups. Moreover Blender by default doesnt add Smoothing groups when exporting. Be sure to select for example Facein Geometry/Smoothing export configuration. And of course, check that model is Ok in Blender ))