Something is just not right... please help

Hey all, I've got some strange problems. I always feel like I'm in a surreal world, like this whole thing is just not real, I'm not scared, but I just see the world like in 2D, or through a glass. Another problem is that sometimes I feel like my dream world and reality is starting to morph into each other. I'm also really paranoid, I often felt in my childhood and now that people want to kill me on the streets everytime I see a car passing by me, it can make me feel like in a life threatening situation. I'm also starting to develop a "nice" alcohol addiction, because it is the only way I feel normal. when I go somewhere and for example the sun is shining, I just don't fully feel being there. Another way of mine to cope with these stuff is that I start to pick up a specific person's behaviour (imaginary or real person) and I start to feel like I'm the person, also if I look in the mirror I feel like it's not me. I'm also starting to lose interest in things I loved to do before. I have thought about all kinds of mental disorders, I also thinked about schizophrenia. From what I see I also tend to pick up what others think, and shape myself to my recent surroundings, for ex. someone starts to act goofy, I start to act like that after a few days, but I can't help. I also don't find the point of living, like why am I even here? I feel like an alien on another planet. Could someone tell me what i am I experiencing and is this normal? (btw. I'm teen, not adult)