I feel so alone

I'm really trying to make friends; I'll go as far as to say I need some mum friends because I feel so alone and isolated. I have nothing for my own. I've lived in Nottingham area for nearly 3 years and I don't feel like I have any close friendships or friends who want to meet up to break up the monotony of the week of parenting and housework. I don't know how to do this cos I don't really want to do all the small talk when I've got so much big stuff going on if that makes sense! I'm trying to find Parent and toddler groups through the week but having a really hard time finding any that are either free or just a couple of £s. Nearly everything costs money that I just don't have. My family are in Cambridge and I have no support from either of my children's dads. My sons dad made the decision to cut contact after meeting a girl and my daughters dad has been court ordered to have no contact with her whatsoever but it just means I never get a break. My partner has 4 kids and when they're all here together I get totally overwhelmed. How do you get better mentally whilst living in chaos!? I just don't know what to do for the best anymore. I'm lost. I'm so sorry for ranting on here but I've come off social media bar tiktok and I just wanted to get it off my chest 😔