Do girls find big masculine guys scary and intimidating and prefer thin cute feminine guys like Zac Efron?

I have been told that I look big and scary. I see cute boyish looking guys get more girls. I am 5,11 and 3/4 and weigh 249 at the moment with long hair and a beard. Also I see that most bigger guys don't have luck with girls in comparison to slim Pretty boy feminine guys why?