Struggling with Work and Health Issues Due to Autoimmune Disorder

I was let go from yet another job due to my health issues :/ It’s difficult to be consistent and reliable in a full time job while I’m also working on my master’s degree when my health and how my autoimmune disorder will affect me each day (and how much) are totally unpredictable and unreliable. If I can’t rely on my own body to work properly, how can I be reliable to others? This also bothers me a lot in my personal life because I want to show up and be there for my loved ones but it’s difficult to be consistent when every day I could wake up feeling okay or wake up feeling terrible and it’s out of my control.