Family members as landlord

I have recently moved from a property that my mother owned due to damp and not being able to afford to heat the place and have now koved into a property that my brother (he lives and works away) owns. Now I appreciate that they are doing me a favour but it's like living under a dictatorship as my mother took control and was/is constantly interfering with what we do in these properties. Me and my husband feel like the place is not ours as we have constantly ask permission for silly things and do everything my mothers way (my brother leaves her in charge of his property) I'm sick of this it didn't feel like our home in her property and still doesn't in my brothers. So the question being is how can I move out without causing a family fallout and what reason can I give as it's really affecting my mental health constantly living under my mothers bloody rule 🙄😭