That's a difficult situation to be in OP and while I do agree that therapy (individual or couples) is a good route I think it's important to also distinguish what you're feeling. Are you just unhappy about the situation of your mairrage and how your wife treats you or are you certain you want out of it? Because the way you describe it seems like you're unhappy and feel unheard/unloved.

You should open up to her about it, be straight forward with it. It is what you feel and it is your marriage. Avoiding problems and conflict don't make them go away it only delays them and turns them into bigger conflict. Regarding the way she doesn't initiate "I love yous" talk to her about it even if it isn't the way of her upbringing, it still affects you deeply and you can't deny that. It isn't rude or wrong to bring up that it hurts you. I too grew up in an environment like that and it would kill me if my partner didn't feel loved because of something I did/didn't do due to how I was raised. I'm sure she would understand that and maybe you two can compromise something on the matter. Other than that it's all up to you OP