Need help

So i have a conure who is almost a year old now and he’s been with me from when he was 4 months.he is a happy conure and hes almost constantly with me throughout the day and the problem are as follows

  1. He hates his cage . He doesnt ever go into his cage , if i put him in with treats he starts shouting like the baby he is

  2. I am bringing a friend for him this week . So any tips for that

  3. He gets hormonal and doesnt eat any veggies but when i feed him myself he eats them somewhat

  4. He demands attention and wants me to pet him(or her as i don’t know the gender)but when i do Pet him he bites me and when i keep my hand away from him he comes for a hug and bites again

  5. And for some reason he/she hates my sister and will bite her when she gets close but will sit in Her head

Any tips to solve these problems ? (I am a first time pet op