So I have this new project bike and I have noticed that when I am on it, with my hands on the hoods, I think I am way too far over the handlebars. I look down and I totally can see the hub, and I think the handlebars are supposed to block the hub if the thing is fitting properly, right? I have my saddle as far back as it can go, so can I adjust/change out the stem or something to change this?

And this is the first road bike I have been on in years and years and years. I usually ride a hybrid, so I don't know all that much about road bikes.

TIA!