How do you include a player who is getting pushed to the back?

I have a player who constantly gets a bit overshadowed by the other players being a bit enthusiastic and loud. They are too polite to shove a word or two in and I feel like it's discouraging them from getting into the game(ending up on their phone and disinterested).

I don't like presenting opportunities to players, I like them to take initiative and make actions on their own, but i've been trying to ask specifically what this person wants to do and I think they're taking it a bit like i'm being condescending. Has anyone had a situation like this? Got any thoughts?