Can boys be loyal?

I just wanna ask you all one thing Do u know a guy who's loyal? (Some girls are also disloyal but not all of them i have seen my mother) In my 19 years of life i have never seen a guy like that not a single . My all cousin brothers r disloyal and enjoying with many girls I heard about my uncle that he had an affair few years back Even I'm pretty sure my dad is a cheater Just let me know With a lot of experience I am scared of mans now i just can't trust them i got phobia