Have you ever tried to join your partner in a hobby or activity they love, even if it’s challenging, like a strenuous hike?

I am single and I need someone in my life. But I have been failed by so many men. what should I do?
Why does it seem like guys will go for an average or decent looking woman but women only want to go out with hunky guys and not overweight dudes? It seems like the only overweight guys with girls are ones who become overweight after marriage.
Why does my heart ache when I think of a person in particular? I feel as if I'm choking on something but I don't quite know what. What does it mean?