Also in terms of verbal accuracy
Using tongue twisters might help you speak more clearly in the short term
I went to school in Iran for like couple of years, and moved back here when heading to 1st grade. Here I've been around variety of people but I remember one of my close friends back then was some Bangladesh dude.
But I'm not sure how much this should affect your voice
nah I'm talking about the accent part, u pick up certain slang and ways of talking from the people you're most around. It's normal for people that moved from one place of a country to a different one to be influenced by the different accents they hear the most.
Having a deep voice can be annoying.
After a while you start to get the sane treatment as niggas who are tall and constantly get comments about their height.
Focus on your other positive qualities. People’s voices usually get deeper do to prolonged period of doing something like smoking/yelling and that’s actually just doing more damage to your voice.