Is your mum an actor?
Well you've got your set up. Your lighting is perfect. Your sounding like Scarlet Johansson in 'Her'. Your framing is making you look like anyone could hire you... but you haven't got a reader that cuts the mustard. I'm sure your mum is amazing, or your brother, or dog, but they can't quite give you what you need to react and respond in the moment.
If you live with actors you are sorted. If you are in a community of actors on social media, you are also sorted. Last resort, come to Mr Selftape and we can either come to you in London or if you are in another part of the world, then we can Skype! Let's not let the lack of a good reader get you the part.
Big love! Be Kind! Be Truthful!