Most people are constantly looking for self-approval, and often find it by comparing themselves to others. So their “helpful” comments tend to be more about making themselves feel better than helping you. They aren’t bad people, they’re just not truly compassionate.
It’s hard because this is the time when you want the support of your friends only to realize they simply aren’t capable of giving it. To be fair, they have their own problems. But, single or not, if you find someone truly compassionate, cherish that person. They are the rare angels in this world.