Is it difficult to find a girl with similar interests?

For me, a very important and incomprehensible question as the relationship with the girls is not very good, I do not know what the reason is, for more than a month the relationship does not hold
Well, girls tend to copy your interests, if they like you. True story!
But if you're an adult, the situation is not so optimistic. Try to find interests clubs in real life.
Social networks are deceptive.