Pottery and perfect sphere?

[Ftank28]

Hey all I’m really hoping I have something here. If anybody could lend some insight if it’s just modern or if any may be Native American is really appreciate it!found some pottery shards at the only place I hunt swatara creek in Pa. I apologize if what I continuously share are just “rocks” I’m just trying to find out how to identify by looking for worked pieces.

[Ftank28]

[OnewiththewilD]

The brown pottery is broken culvert pipe unfortunetly.

[Cskelton]

I think the brown pottery is old sewer pipe.

[Ftank28]

Hahaha that’s my luck lol and the big rock with lines through? Possible native American pottery?

[Kentucky point]

Unfortunately, I do not see anything to suggest Native American origin. NA pottery would look something like this.