I plan to leave but how ?

Ok so I live w my boyfriend and don’t get me wrong I love him but not as much as I used to. He does make me happy but then again I think I’m just happy with what could’ve been then w the actual reality. I want to leave but I don’t have the courage. See idk what to do. Talk to him face to face or just leave. I don’t wanna face him bc here’s a little inside about him. He’s abusive asf. So if I try to even talk to him he gets super abusive and starts hitting me over the smallest things. He choked me over him loosing a pen not just that he choked me and pushed me just because I used his charger. There’s soooo much more to the things he’s done to me. But enough is enough and I don’t want to be with him anymore. His parents think I’m w him just for money since he recently started a new job when I’m not bc he’s been broke when we started dating and it’s always me who’s gives him money. I want to face him and actually talk to him and leave things on good terms but I don’t think that’s gonna happen. Either or , or i just pack my things and leave before he comes home. Idk what to do .. any advice ? ( btwwww the fact that we live w his parents , theyyyy KNOW he hits me they know he treats me like shit. THEY KNOW and they actually think it’s okay. )