Transition from full time carer role

I’ve (50yo female) been caring for my mum (84) for the last 5 years full time. She’s just entered residential aged care and I thought my life would open up, but I’m struggling to find a life at all. Has anyone gone through this? I feel like I don’t belong anywhere, I have no career because I’ve been caring full time, and I don’t really have any friends. What do I do that would justify mum going into full time care? I’m not sure there are answers, but I’m also sure I’m not the only one.