Is something wrong with me ? Lol

Sooo I’m so confused about my friendships. To make it clear before I continue to rant, I’m the most understandable person if my friends are busy etc etc. They’re all in fact much busier than I am so if plans ever change or they can’t do something I don’t get mad or anything. BUT, tonight we were all supposed to go out for the first time in months. Now these are my friends for 10+ years. So one of them saw these events I was doing “interested” on Facebook and commented on one saying she misses me and we need a night out ASAP blah blah blah, we all agreed (SINCE 2 weeks ago) to go out tonight. So last night I messaged one asking if we’re for sure going out so I can arrange my mom to watch my daughter etc etc. Everything is all planned and all good. So earlier around 6:00PM she texts me saying the other one isn’t going anymore so I said “It’s ok, we can still go if you wanna just let me know as soon as you can so I know if i should get ready once I get home from work.” Soo it’s 11:00PM and she hasn’t even respond to my msg or bother to even open and read it. Now I know whenever she decides to open it shes going to either ignore it or she’s going to msg me back saying she didn’t know I was still planning to go 🙄. Honestly, I feel like dropping both of them as my “friends” because this isn’t the first time they’ve done this to me and I just get annoyed with making plans and it being canceled when it’s that day. I also didn’t pick up an extra shift since they kept telling me to make sure I don’t plan anything since we’ll be going out. Ok but I explained this to them before and told them it’s why I don’t go out with them anymore yet here they are doing it again on the one weekend we’re all supposed to go out but they’ve been going out every single weekend. I honestly feel like they just wanted to go out and exclude me from going with them but I haven’t done anything to them. I don’t talk bad about them, I’m usually the one driving us and paying for parking etc etc and I honestly don’t mind I’m just explaining that I’m doing all of these things out of my heart for these people I considered my best friends and well tonight they made me feel a lot shittier then usual. They’re also usually the ones that get more messed up than me whenever we’re out and I’m in not about drama at all so I know that’s possibly not the reason why? Also, I have another friend that got into a relationship and stopped going out with me. My close cousin go into a relationship and stopped going out with me. I feel like I was used by the until they found someone they’re serious about and decided to cut me off afterwards because they don’t text or call me at all anymore. I just know once they’re lonely again or breakup with their bfs they will start talking to me again but I find it hard to not give in because they are actually the closest people to me. IAlso I just feel like cutting them off completely even though after doing so I will be a lonely lonely friendless person and back to the dark hole for me 😔, especially dealing with my breakup with my ex fiancé etc. I always made time for all of these people and went out of my way for them no matter how busy, broke or whatever the deal was to have their backs and be there for them but now look at me, I’m a single mom and I obviously am now friendless...