1.the 4 source theory of the pentateuch

contradictionsinthebible.com

2.false prophecies in the old testament

https://www.youtube.com/results?search_query=false+prophets+of+the+bible+walter+r+mattfeld

3.contradictions in the crucifixion and ressurection accounts

https://outreachjudaism.org/crucifixion-resurrection-chart/

4.textual corruption by christian scribes

https://www.biblicalunitarian.com/articles/textual-corruptions-favoring-the-trinitarian-position

hope u guys enjoy