roadie i am so sorry to hear about your kitty. pets are so wonderful and love us unconditionly. it's absolutely ok to be sad. who wouldn't be!??
and i'm sorry you feel so alone. we all really care for you here. there's a lot to love re you. i just wish you could make irl friends. i found an abundance of friends thru AA. matter of fact my very best friends are in AA. are you reticient of taking that leap of faith? it may be scary but i think you would be such a good friend. surely there are others in AA who feel scared to reach out and are lonely too.
this brings to mind when i made a long distance move. i went to AA every day to get a foothold at new meetings there. i felt i was out of the circle and i cried before going to meetings. i made myself go even with those depressing thoughts. my life depended on it. i talked to my long distance sponsor about it. she said "u go to a meeting and do what you have been taught. go up to the newcomer, intro yourself, give them your phone number and try to make yourself chat with them. get a temporary sponsor while you get to know some ppl with good sobriety." and service work takes us out of ourselves and you will make friends this way too. to start off maybe do a coffee commitment. say hello as people arrive. ask them how things are going. by putting your face out there people will get to know you better too. i hope my suggestions offer you options to reach out. and i'm glad you are still going to meetings in spite of how you feel. also if you have a higher power you can pray and say you need help to overcome your anger and loneliness. it's ok to ask.
oh and get another kitty soon.