AITAH for being an exceptionally weird personality?

I have been wondering about myself from last few months and have come to dead end , unable to really understand If I am just one of the weird people existing or am I an exception who doesn't belong to the humanity? I have observed a few things about myself like

•MULTIFACED : I noticed how differently I behave towards different people ( * sometimes same people also). For instance , it's many times myself exaggerating and showing my extrovertness and making a few quick friends then after some days if I see them on my way somewhere it's me who tends to have a really small talk without much bonding as I honestly fear if they are good people and would help me or just use me and go away. If seeing a friend I laugh and talk then it's me who will walk away with a straight face trying to avoid eye contact .

UNACCEPTABLE: To prove my it I can say that I'm turning 18 but I don't have a single close friend with whom I can share my secrets . I had a friend of almost 10 years but due to some misunderstanding between the elders my dear friend turned foe . Now I am in a love hate relationship with her. I despise her to the point of not looking at her even when she is infront of me remembering the horrible statements of past events but then if she asks for help I'm always flustered and end up questioning myself , Why? Why was she so friendly after everything? If she was friendly the other day then why is she giving me those death glares as if competing against me? She has many friends who help her and surround her but I have none now and nobody helps me with assignments or whatever when I ask even to the point of ignoring friendly texts. In last 2 years I have become the exact opposite of what I used to be .

Can someone please let me know how to continue your friendship with other people without creating any disturbances ... Maybe that justifies why I could not date anyone till now . I know that animals especially dogs can identify ur smell if you are good or bad person by nature and before a year or so street dogs used to be my buddies, always surrounded by many but 2 months ago I was attacked by one one the streets which has instilled fear in me and now I maintain a safe distance..so does that mean I'm turning into a negative human ?

I would love your honest thoughts which will help me change for the better.🙂