Check my sentences please

Could you please check my sentences?Are they complete sentences or sound ok.I'm still struggling with my english.Thanks

1.Wrestling with these problems is what drive Ernesto and Alberto to a journey of self-discovery.

2.Alberto and Ernesto gained a face-to-face experience with social classes, and exploitation that led them on a journey of self-discovery.

3.Throughout the trip, Ernesto and Alberto discovered the reality of a land filled with suffering, oppression, and injustice. (I put this sentence in my intro, so Do I have to talk about these issuse, even know MY thesis is :. Alberto and Ernesto gained a face-to-face experience with social classes, and exploitation that led them on a journey of self-discovery.