Living with family post marriage

How to convey a guy that I will not be okay living with his parents post marriage?

I am someone who is even not comfortable living with her own parents. I need my space, no questions, my routine.. I don’t want to live a life where I am overthinking on something my mother in law said to me in passive aggression. I get the when parents get old, we take care of them.. that ai completely get and I agree but I have worked and I have built a life for myself here in a metro city, all this for what?????

Also, some parents are actually toxic and if you’re stuck with them for ever then what’s the point?

When we convey this we are often perceived in a wrong way… and the society’s conditioning is such that even I feel bad saying this to guys…

What’s the correct way to first, say it to myself and then to the guy.

Please help..