My stepdad

Okay so... firstly I’m going to post this anonymously because I don’t want anyone to recognise me due to what I’m going to post. My mum and stepdad got married when I was 5 and he seemed really nice, but when I came closer to teenage years and my breasts started growing etc he became really weird. Firstly, I wake up probably every other night now to him being in my room either touching my ass or something else. I also have ripped 10 pairs of sleeping pyjamas from the crotch area and I’m pretty sure it was him because this only started happening when he started touching me there etc. (P.s I’m 14 next month). Recently he came into my room and I felt something touching me so I woke up and turned around quickly and saw him slowly pulling my blanket off to do god knows what - his excuse was he was looking for something and he quickly put his flash on to “look”. Firstly, you perv, my room is small and if there’s something in there that’s not mine it defo wouldn’t be in my room cause I’m actually a neat person!! Secondly, if you were looking for something why do you have to literally search by my ass like I’ve got something of yours in there?! It happens so much and on top of that I’ve got bad reports at school, my parents think I’m up to no good because I had a boyfriend at one point which isn’t allowed in our family and I took a depression test where I got 19/23// I’ve been crying for days without anyone knowing or caring and I was really close to self harm but the most I did was some deep scratches. Last night I woke up with me laying with my legs and arms open no blanket on and I admit I’m a bad sleeper but I know that’s just weird, the reason why is cause I have a net around my bed which I close every night and when I woke up randomly at 2am it was open so someone could, yano, access me... also I once woke up to him laying IN MY BED next to me and my knickers were ripped but apparently I ripped them off myself (defo). Once he brushed his hand against my breast in the car and another time he got really close to my privates down below. I can’t tell my mum because she will never believe me, she doesn’t trust me as it is and she’s completely blindly in love with him, they’ve already got 3 kids so what I do wont really have an impact :( on top of all of this my stepdad created a fake account to spy on me and I thought he was some weirdo trying to hit on me so I ended up getting really rude to him without knowing it was him// he also knows a lot of peoples parents where I live so he found some things out about my friends and dislikes them and made my mum dislike them too so it’s like they’re trying to make me not have any friends at all :( my main concern is what to do about my stepdad and what he does to me at night because he already treats me like absolute garbage but what can I do? He blackmails me sometimes saying if you want this or that then what are you going to do to please me or do this otherwise you’re not getting this and so much more, Please please help and get others on eve to notice this post, I really don’t know what to do with my life anymore because my mum thinks that I’m the one who’s rude to him (sometimes I don’t talk to him properly).