I still live with my mum and feel similarly to you (feel like I’m stuck as an adolescent, and my feelings don’t always matter to her either. She hasn’t always dismissed them, but has mocked me for being concerned about things in the past, and I never really know what reaction I’ll get if I feel upset etc). I’m saving for a house but at this rate, if I want independence I may have to just rent.
I’m sorry you’re feeling so down, modestlychee.