Life blows

So, I have come to realize that I haven't had a active mother figure in my life since I was about 15....and I am almost 30. I have my ex step mom who I call my mom, she married my dad when I was 3 and was the only mom that I knew. But even now and in the last few years, I do not have any sort of regular contact with her. She is around for holidays and birthdays and if I really need something, but that is about it. I have a step mom now, she is really good to my kids but we don't really have a relationship either. She always posts pictures and stuff she does with her kids or my younger sisters and it kind of hurts. I shouldn't get upset that she does things with her own kids, I guess I just wish I would be taken out to dinner or to a concert or spent time with. I sit here at home alone with the kids every day, nobody really talks to me, except for my friend next door. I have nobody ever contact me first to even just talk or say hey. I literally feel so isolated and alone and I don't know what to do.