Letting go of friendships

I have had a pretty traumatic year on top of just having a (second) baby and i feel like everyone i thought was a good friend has completely dropped off the face of the earth. During good times they have been good friends but i feel like any hardships and i never hear from them. I feel like people dont know what to say to me because no one can relate to what i have been through but is that a good reason for not reaching out? I think a lot of peoples relationships change when they have babies for lots of reasons and i personally believe you should be invested in your friends lives even if that means being interested in their kids. Even if youre not a kid person. I think thats just a terrible excuse for not making an effort as kids are such a divided topic among women, its an easy way out. I dont think my friends havent messaged just because i have kids btw but they dont have children. I do know that they see other friends kids and never make an effort with mine. I feel like if i cut the friends out that i feel like have not been there for me then I will have no friends left and i have a small circle as it is. I am not a confrontational person and dont need any extra drama in my life due to some other things i am going through. If i just didnt say anything and didnt reach out to them at all im not sure i would hear from them again or not for a good while. I guess i am just wondering what others would do in my situation? Would you just cut everyone out and have no friends during a time you really need support? Or keep being the only one making an effort in the hope that one day they will need my support and be grateful that i always stuck around?