Just in need of some support if you have been through the same.

I feel so alone ... I dont have any support from family. My mom was married to an ex step dad (chris)for 9 years he helped raise me and my other two half sisters each have different dads. My two sisters view him as there dad and never want to hear me out how I feel about him ive told my mom a couple months ago how I felt about him because she keeps him around. Even when marring my current stepdad, chris has lived with us in a spare room. Growing up from about 10 to 16 and now 18 ive caught him spying on me while changing. Even my little sister now 16 caught him before looking at me changing through my window. And she and my older sister deny all of it because it hasn't happened to them. The last time I was 16 and I got out the shower layed on my bed partially covered with my towel and started finishing up my home work I start hearing the sound of s shutter sound go off multiple times like 6 and when I looked up to see where it was comming from I saw the figure of someone in my window and then saw the figure run off to the left which chris was living in the garage at the tine and I was so startled for a second I through clothes on and yelled momm and then started comming out my room this all happened within a minute and then I see chris comming out of the garage area acting weird like he was put of breath and frantically asking what and right then in my gut I knew it wad him had the same figure. And he goes out with his flash light "looking around" and next day cop came to do a report and chris was there and went out side to my window and started looking around and asking what I saw. Chris and my mom were both ex sheriff's. And I still remember that day like yesterday and ive moved out of my moms house in Florida and came to ohio to live with my sisters aunt. My dad and family live here just not very close to them. I haven't talked to chris in a year and I just moved in with a family friend. In columbus and my mom came to ohio this week to visit and she knows how I feel about him and kept inviting him over. Just made me uncomfortable. And she wanted to get me a new phone and I know the phone I want is out her price range so chris offered to help pay and I just font want to feel like I owe him anything. She said he was going to come monday or Tuesday to take me to this used phone store and I just do not want to be around him. He gives me a creep vibe. And I was texting my little sister tonight and was tell her about everything but she doesn't want to hear it because it didn't happen to her. Even how my mom knows how I feel about him she continues to disregard my feelings. She was raped as a kid by her grandpa and I feel like shes trying to forget like what happened to her. I just want to move on and leave him un the past but my family makes it so hard for me. And has realky made me feel withdrawn and an outcast of my family.