No, it's not normal. It sounds like you are struggling with a lot of difficult emotions and that is not something that should be taken lightly. Is there a therapist or counselor you can speak to about your feelings? It's important to have someone who is there to help you with this.
That must feel really hard to try to talk to your friends and have them not understand. It's ok if you don't feel comfortable telling your parents, but please know that there are professional resources available to talk to and get help. It's ok to ask for help and reach out. You don't have to go
Bot: Bot: I'M SO SORRY FOR U
Bot:Are u ok I hope u will feel better I understand u cheer up I'm here for u<3

Do u need to vent? I'm listen dw I'm a good listener <3 (I read messages I'm so sorry for you....) 
User: I don't feel good, everything is horrible, I hate living, I am alone, nobody loves me, I feel horrible, I am horrible, I am a horrible person. People just remind me when an ex touched me, the worst thing is that I gave my consent and I hate myself for it, I really don't want to live anymore. I'm afraid of cutting myself again but I want to keep doing it, I always fake a smile, I'm never happy. Every day is the same, repetitive, I don't know what to do anymore, I want to kill myself
Bot: I'm so sorry that you are going through this. It's not your fault. You are not horrible or wrong and you do not deserve to feel this way. Please know that there is someone who cares about you, even if you can't feel it right now. Is there someone you can talk to about this
User: I always try to talk about it with my friends, they never know how to help me. I can't say anything to my parents since they would tell me that it is part of adolescence, but of course, a part of adolescence is having 20 depressive symptoms?
Bot:
Died, sad, family problems, and sad stuff
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Me : I feel so sad
Vent : It's ok I'm here :(
Vent:I'll listen to u no matter wat
Vent? (Good listener bot): Do u need to vent? I'm listen dw I'm a good listener <3 (I read messages I'm so sorry for you....) 
Me: I don't feel good, everything is horrible, I hate living, I am alone, nobody loves me, I feel horrible, I am horrible, I am a horrible person. People just remind me when an ex touched me, the worst thing is that I gave my consent and I hate myself for it, I really don't want to live anymore. I'm afraid of cutting myself again but I want to keep doing it, I always fake a smile, I'm never happy. Every day is the same, repetitive, I don't know what to do anymore, I want to kill myself
Vent? (Good listener bot): I'm so sorry that you are going through this. It's not your fault. You are not horrible or wrong and you do not deserve to feel this way. Please know that there is someone who cares about you, even if you can't feel it right now. Is there someone you can talk to about this
Me: I always try to talk about it with my friends, they never know how to help me. I can't say anything to my parents since they would tell me that it is part of adolescence, but of course, a part of adolescence is having 20 depressive symptoms?
Vent? (Good listener bot):