How do I live like this? Need guidance?

Hey everyone. I’m gonna get a bit personal on here. I hope you all can help me. Or give some helpful advice to me? So to give context. Me and my partner at the moment. Moved into my Nans house. We also live with my uncle. As he lives with my nan. We moved in here because otherwise. Homelessness was the other option. My nan offered us her spare room and we are forever grateful. Now. I’m aware of my faults. I. No matter how much I want too. Can’t get myself to do things I need to do, The guilt eats at me. But my body just wants to stay frozen and still. rotting in my room I suppose. I have a dog. And I have been trying to get into a routine of walking him daily. I have been failing as of late. But I am trying. My OCD is bad again. I need to see a doctor about my meds it’s been a lot. Now you are caught up. The dilemma. Me and my partner went for a walk today. Didn’t take my dog cause we were going on a date to a food place in the neighbourhood which didn’t allow dogs. Only found out last minute. I was gonna take him. Then found out. And i was gonna make it up to him tomorrow. Because of that. Now also. I was warned by some family that my uncle can be a bit much. Gets drunk and berates you I suppose. So far he hadn’t except for one night complaining about the dishes. But it wasn’t to bad we simply just cleaned them up, however tonight that changed. Though it’s still not as bad as the stories we heard. But that scares me for what is to come. When I get home. My uncle. Who smelt distinctively of alcohol, came in to my room. Just as I had got home to lecture me on not taking my dog for a walk. To which I said I understand. And I will take him tomorrow. You know. He wasn’t wrong but he was certainly direct. And kept repeating himself. It made me uncomfortable I suppose. There is only so many times I can say I will work on it. Then I close the door and just try to relax after that. And he knocks and comes in yet again to complain once more. To sum up his very long rant about me and my partner. He is mad? that we ordered groceries to the house one or two time instead of asking him to drive us. (We have no car atm) But we aren’t exactly trying to burden everyone with our presence. You know? My partner also hates asking for help. And that we stay in our room most of the time and don’t socialise. (Most of the time him or my nan are doing their own things and I don’t want to just intrude. But I normally talk to them when I’m out and about in the house) but then. He started calling us weird. Over and over again in his long rant of saying the same thing multiple times. And me and my partner are just sitting on my bed. Saying “sorry we weren’t trying to be. We will make a better effort. We didn’t realise” ya know. And he kept going. Like not listening to our apologies and continuing to berate us. Just using the same “weird” insult. Meanwhile I’m trying to hold back my tears. While I necessarily don’t disagree with anything he said. I feel there was a better way for him to bring up his concerns then to ambush us like that.. I also don’t think the insulting was necessary. Or repeating everything. I got it the first time. I already feel like I don’t belong here. My nan owns a nice house in a nice town and neighbourhood. they all live on the coast. Ya know. And growing up I was living in rundown houses and moving from place to place. I feel out of place here and i don’t feel like I fit in. And I guess I was right. Because apparently I’m weird. To rectify this I offered to hang out with him tomorrow morning. But I can’t shake off his insult. I can’t stand up for myself. I need this roof over my head. And I fear any defiance from me will land my ass on the street. I’m not saying I’m perfect. I could try harder. Be better. I’m really struggling mentally. But I can’t be. I need to lock in and I can’t. My nan is leaving for a month or so soon. It will just be us and him in this house. And I’m scared on how this will go..