Hate my voice, I have a really breathy voice and sound like a little girl?

I have a similar problem as well. Even though I sing from my diaphragm, my singing voice still doesn't sound strong and when I try to sing songs that has a lot of "oomph" in it, I end up failing. For example, I suck at trying to sing Kelly Clarkson's Natural Woman because my vocals aren't strong, and I just end up sounding like I'm yelling or shrieking instead of singing. It's why I tend to stick to singing songs that my voice can actually handle.