Life In 19x19

Oh ok so it was whites turn and they resigned I will download the sgf program and load up future games that way. So then the black group is in sente and that's why there both alive

Hello I am new to go and am trying my best here is a game I played on my phone but I don't really understand why the black group labeled 5 is still alive. I did my best this game but I also attached a move list in order of played if any cares to analyzed and explain my game to me thats great too ...