Hi wwanttolearn3d ,
You probably need more geometry in your mesh. Just adding a Subdivision Modifier probably wont be enough.
To test this try adding another Subdivision Modifier.
Also a tip:
To take a screenshot you can click window > save screenshot.
But I put the subsurf level on 6, and I even applied it twice to the point where you couldnt see individual vertices and it would freeze up for a bit and that still didnt help.
There maybe an issue with the geometry, check for double verts or holes in the mesh. In edit mode select everything and press M and by distance.
Can you post a screenshot of the object in edit mode.
just a side idea maybe check that location, rotation and especially scale are applied (if they have been altered)
if left unapplied they cause problems
hope this is helpful
