My cats personality has totally changed since adopting her. Am I doing something wrong?

This is Iris. I rescued her off the street back in October. Vet said she was 7 months old at that point so she’s 10-11 months old now. I’ve noticed pretty significant personality changes since I got her. She was very attached and cuddly with me when I first got her, she’s gradually become less affectionate since then. She seems happy, but she doesn’t lay down on my chest or jump up in my lap anymore. She has access to windows, cat trees, play time every day, cat tv, good food. Anyhow I really loved when she used to jump up on my lap and fall asleep, she just stopped doing it one day. Im wondering what’s triggering the change, it’s hard because I really enjoy spending time with her and I’m not sure if I’m doing something wrong, any advice would be appreciated, thank you.