I’m tired of my pets

I’m 18, I’ve had my fish since I was 11- you expect the parents to be the primary owners but my fish just live a fucking shit life and I want them to get adopted by someone

Every single time I try and sort out their tank something goes fucking wrong and I’m tired I didn’t choose this life I was 11, I love my fish and I need them to survive but they’ve been ill twice in 3 weeks since their brother passed away. I’m just so upset, I’m so scared I don’t want them to die like their brother it was slow and horrible, they’re currently being given treatment but I just want it all to go away it feels like it’s every fucking day I have to fix my diet go to the gym make sure I walk enough make sure I eat enough protein speak to my friends look after my fish I didn’t want any of this. I don’t want any of this I never asked for any of this I want to be alone and asleep but I’m freaking out over my fucking fish after a long fucking day. I’ve had to post in the aquarium subreddit again and I guarantee they’re going to tell me I’m a disgusting owner because they’re so horrible for no GOOD FUCKING REASON