Plot Holes in GOT That I Care About A Lot

Game of Thrones got me like 🤔
  1. WHERE IS GHOST
    Where was he during battle of the bastards? IS Jon keeping him safe? Did he send him away after he came back to life?
  2. WHERE IS GENDRY
    I doubt he would just row off and forget about everything that's going on in westeros. Is he just waiting it out? Is he still rowing? Did he die from starvation on that stupid lake?
  3. WHAT NAME WAS JON SUPPOSED TO HAVE?
    There's no way Lyanna whispered "his name is Jon snow" it looked like she whispered a name that started with an A? Am I crazy ???