Doesn’t fit right

I have a big head, so I thought this would fit right, but it sits very very low on my face, or the strap for the ears has a lot extra room and flops around, making the ears look bad. I think if it was adjustable on the front and sides of the head, this would be a great product. The flap that sits under the tongue also looks out of place, I’m very disappointed in this item. It will need several fixes that I’m not quite sure how to fix myself yet.