My dog bit me and broke skin

I have a 7 year old shorkie named Nala. I’ve had her since she was 6 weeks old and raised her. She was good at first but has completely changed within the past couple years. She started attacking my eldest dog (15yrs old) and has been growling at us on occasions. I believe she’s become territorial? When I used to have a hamster I was holding him in my room one day while Nala was in there with me.. well my eldest dog walked in and Nala attacked my eldest so aggressively. Well today nala and I were laying in my bed, I have a rabbit who free roams my room btw. Well I just moved my foot on my bed because I was turning the other direction and out of nowhere she went after me and bit my toe, she drew blood and punctured my skin. Do you think this could be the issue of being territorial over my rabbit or my small animals?? Sometimes she just randomly does it to my other family members too. I just don’t understand… she once bit my lip open when I went to pick her up when she was in the kitchen during a gathering. My stepdad has been bit on multiple occasions just by moving. It’s gotten bad.

I really feel like I don’t know where I went wrong. She did good until she turned about 5. She was super sweet and wanted all the love. I’m at a complete loss because my eldest dog is very well mannered, very intelligent and trained extremely well.. my youngest on the other hand… idk what happened 😭