This show strays very far from the cannon that is the games and the books.
I'm all for creativity and creating your own story. A lot of people actually enjoy this take that's also fine. I just wish people would write their own story without destroying something already established in the process... But then they couldn't piggyback on the good name of something that's already established so I guess that's why they don't do it that way.
You might like that show but just know that it is not canon and the people who actually love Halo for what it is more than likely going to be disappointed in this series because it could have been amazing