Um... you sound like any other girl. Like really. I don't even know what I would criticize in your voice. And... that's coming from someone who has been stealth for over a year now, just for reference. And if you want to squeak and scream and whatever, it will come with time.
Also... I'm 28. I just moved to a new city. It's weird and difficult. And the best advice I got was: that's normal. Moving cities is just hard and scary. On top of being full time for such a short time... Six months is nothing. Everything doesn't have to be perfect right away. You are putting a ton of pressure on here. I mean, give yourself a break.
Sometimes with those of us who have it "easy," who are passable and attractive and whatever, it's like we have all these expectations of ourselves to be normal and perfect and okay all the time. But being trans can still be really hard and alienating and it takes a while before you stop feeling like you are walking around with this big secret hanging over you. And that's okay. It's okay to not be okay all the time.
Try to celebrate the things that do go well. My sister, when she was going through a rough time, was like: anything after pulling yourself from bed in the morning is a win. And keep in mind where things were before. I find comparing myself to "where I was a year ago" is more useful for my brain than "normal girl my age" (whatever the hell normal is other than a setting on a washing machine anyway).