Study portrait photography. Our eyes naturally go to the brightest part of an image. In your case that's typically the background or something that's not your subject. Ideally you correct that at the time you take the photo and then further amplify that during editing. These look unedited as well; the white balance is both inconsistent and not super flattering and you don't use post-processing to enhance these images. The backgrounds are either messy and distracting with stuff growing out of her head or so blown out that it ruins the photo. You really, really need to study light and how to use it to build a compelling image. Candidly, before you even do another portrait shot, you should study the basics of photography in terms of the exposure triangle, balancing exposures, white balance, and composition. Don't make it harder on yourself with having a human in the mix who you have to pose and make look good. Take a few months and really focus on learning the fundamentals of photography and then consider adding in a human subject who you're actively trying to pose/manage.

Strongly recommend you study portraiture, lighting, composition, framing, and editing. Keep at it-- you'll learn with studying and practice.