Coping with adjustment disorder

Hi all. I’m new to this forum and looking for support, and hopefully to connect with people going through a similar thing.
I’ve just learned my mother has borderline personality disorder and most likely bipolar. I’ve found her very challenging all my life, and as an adult I struggle with feeling extremely lonely, alone, judged and insecure. She doesn’t get along with any of her family, so as a result she isolated me from them and I grew up living 5 hours away, with no siblings for support. I’ve been so overwhelmed coping with her issues on my own for so long that I haven’t had a relationship for 10 years now, I’m incredibly depressed and feel I have no purpose in life.
I moved interstate following the pandemic after reaching my lowest point, living alone in complete isolation during lockdowns. After 6 months, I had to come home because I wasn’t coping.
I’m now staying at my parents until I can get back on my feet - I can’t work right now and my psych says I need to take a year off to reset as a result of the ptsd. Every time I leave my parents house, I get panic attacks and feel incredibly unstable and unsafe. I feel as though I lost my whole community after the pandemic, realising that where I was living wasn’t right for me and having most of my friends move away. I’m at a point where the lack of connection and community feels like it’s so deep that it’s threatening my survival. I can’t seem to move past the fact that my mum didn’t provide a secure environment for me when I was young, and I don’t know if or when I will ever get my life back. All I want is a loving partner, kids, and a dog. It seems so simple, yet so unachievable.
Any support is greatly appreciated. I need help to get out of this situation - I can’t keep doing it alone. Thank you