Alert barking/ advice on how to manage

Okay, I know this is forum for puppies but I’ve had my dog for 4 years now. She is the sweetest, gentlest dog ever and also my first dog. However, she has a lot of separation anxiety. I recently moved into a new pace and I’m worried that her alert barking will become an issue. I never got noise complaints in my last place but I’m worried it might be different here (nicer place, nicer neighborhood). Maybe I’m too worried about it but it also stresses me out. We’ve been her a couple days and she’s only barked a handful of time. (Hearing doors unlock, people talking outside). It’s not all the time but I’m worried it will be worse when I’m gone. We been together a lot over the past few weeks and maybe that will make her separation anxiety worse. I love this dog so much and break down at the idea of getting rid of her. I just don’t know what to do. “

I think as she’s becoming more comfortable here she may begin to bark more. She barked a few times just in my writing this post. I’m so lost and love her so much I don’t know what to do.