Making friends?

So I’ve been really struggling recently as my best friend is divorcing her husband and she was the only friend I had at this base. I have tried attending functions ( mom functions) and I can’t seem to make any friends. I tried to introduce myself to our neighbor which didn’t work out she waved then didn’t say anything. Our neighbors across the street made eye contact with me when I waved and then averted their eyes. Nearly every time I have tried to even make small talk many of the wives have been incredibly rude to me. I am a young mom I’m 20 almost 21. I have a 1 year old girl and pregnant with our son. I am really struggling that there is something wrong with me. My husband is rarely home because of his job and I just really want someone to talk to. It’s starting to make me feel like I’m not worthy or that I’m weird. I’ve never had a problem making friends before. I tend to be pretty personable. Please share if you have any advice. Thanks