Plot questions

Halo 5 is fun to play. I like how most of the weapons feel. Love the updates to the forrunner weapons. Love the new promethinas. Would have liked more time with the chief, but lock’s team was fine. There were a ton of plot holes when you take all the material into account. Like when did chief go to that planet that was mentioned by benjimin jero in hunt the truth? Did chief go awol and then come back and go awol again? Why are the guardians more threatening than the Halo rings? How did the forrunners ever loose to the flood when they had so many different rule the galaxy devices? What happened to the janice key? Why is halsy not mad at palmer? What happened to fireteam majestic? Was happened to the gift the librarian gave to the chief? How did the domain survive the halo rings? Where is the planet the gaurdians go to located? What is special about the gaurdians? Are they more powerful than giant warships?