sexually abused

So my mom and dad got separated because my dad harassed my mom And I live with my mom and later my mom bought a guy and he's my mom's boyfriend and I saw him having sex with my mom that made me traumatized and I thought he was good person but he's toxic than my dad he doesn't have job so he depends on my mom and he drinks alcohol and shout at my mom by calling her BITCH so I was so sad and depressed but later I turned into 22 I met a guy and he's nice and I scared too because of my experience like my dad and mom's boyfriend but I was wrong he's nice and treated me well so basically we had long distance relationship we talk each other daily and my mom's boyfriend got to know about this and started to take advantage And he blackmailed me and tried to have sexually with me and he touched my private parts and I was shocked and I pushed him away and locked the door because my mom isn't there at home later when my mom came I told her but she didn't believed me and that guy made up a lie by telling a guy came to house to meet me and she believed me that made my heart broken I was felt low and I started to hurt myself later my mom saw when he touched me and yeah she argued with him but he hasn't left the home idk when he's around I'm uncomfortable I started to have insomnia and suicidal thoughts I just gave up