Health Question!!???!?

So im 14 and about 140 pounds … I was wondering i get about 8 hours of sleep and i dont eat breakfast well for one i am like always hungry i eat meal after meaall … If i ate breakfast would it help my hunger issues? & 2. i am like always tired no matter how much i sleep im still tired? Is there anything i can do to make that better? and 3. Is there any way i can lose weight really? because i have gym and it doesnt seem to be doing much .. thanks guys 🙂