So basically it's very simple: to start with, if you want to win the match, you shouldn't be afraid of him. There are still many, many things to do, but above all this is the most important: Don't be scared of him!
It is rightly said that the most difficult thing in chess is winning a won position
I accepted that the endgame was better for White, but he has to win over the board, not with his legendary home preparation - that's crucial!