Sadly, the shidduch scene is stacked against women. There are more available women than men, which is a big problem, and men usually date women younger than them, another contributing factor.
Hangups over appearance, weight, money, and other factors play out on both sides, but it is true in both the general and frum societies that heavier women are often not given even the time of day, even by heavy guys, which I find ridculous. I try to eat well and keep moderately active (walking places, etc.), but am still on the zaftig size, and would want a shidduch with someone who could relate to my experiences and whatnot. But many men sadly don’t think the way I do. (OTOH, I’m a farshtukene feminist who davens monthly in a partnership minyan, and who holds like that shana u’pirush Rav Uziel, zt”l (Has ve Halilah) le ma’aseh on things like dayanot, abortion, etc., so what good is my opinion?)