Her name is Cocoa and I got her from a batch of kittens at 8 weeks old.  She is currently 4 1/2 years old, she is a tuxedo and is very small. Cocoa is what i think you’d call an anxious cat, she hates to be around anyone besides me, but she has her limits with me as well. Cocoa doesn’t like it when I pick her up or walk near her when she’s eating. At first I thought maybe she just doesnt like me, but that isn’t true as she gave birth to all her kids next to me and lets me pet her. (she has 2 kids, she got spayed last year along with our other cats). For some odd reason she also likes to eat plastic, even though she has food, and she drops her food in the water and eats it. (Very annoying so I separated for bowls) 

Honestly, I’m a pretty lazy person so I blame myself for not playing her with growing up. (I was extremely depressed when I got her due to the death of my first cat) I also tend to cross her boundaries by grabbing her and holding her (she tenses up when I do). But, I want to stop doing that so I’m slowly leaving her alone. 

I want to understand why she acts anxious around me, why she eats plastic, why she tenses when I grab her but lets me pet her, and why she hates everyone. 

Pls help me, I want to make her feel comfortable in her own home, and fix our relationship that I probably broke with her. 

Please help me understand my cat and how can I fix our relationship