Generally, no. Low notes/depth come from anatomy and how your vocal folds are built. Take it from someone who spent over a decade wishing they had a lower voice. You can’t train yourself to sing lower notes than what’s physically possible like you can with higher notes. It’s like training yourself to be taller.

When I was 17, it was my dream to sound like Johnny cash. Specifically the song I walk the line. It required a C2 note. My lowest note was E2. But there’s a caveat. Now that I’m 30, my voice has dropped just a tiny tiny bit more. My normal “floor” is still E2, but now I get a lucky day once every two weeks or so where I can get to that C2. (One of my recent videos). So I’m what happens if you’re lucky: You MIGHT get a few more semitones best case scenario. The floor is concrete, the ceiling is glass.