Hey Amine, thanks so much for the response.
I am in a similar living situation with my parents in an apartment while I'm at university, but I recently started not giving a care about singing at home! I asked earlier today if they could hear me singing (and I can sing really loud sometimes, up to 5 AM in the morning!) and they said they didn't know I was singing. Then again, a living room and kitchen separate my room from theirs.
Anyway, I appreciate the advice. It is nice to finally be able to feel like I can improve upon something I've always wanted to do well. When I was younger (I'm only 21 now), my mom and everyone else would tell me I didn't sing well and that kind of got me down, so I stopped. I've been sort of "practicing in secret" and improved a bit. As I said in my original post, I've still got a long way to go, but even this incremental improvement gives me hope that I can one day become a powerhouse like Bobby McFerrin one day. That would be a dream come true.
Thanks again!