If you're really enjoying yourself I'd considering picking up Phantom Liberty as well. I played through the main game shortly after it came out on PS5. I was very 'meh' about it. But I recently picked up Phantom Liberty and started a whole new game, I probably doubled my play time, and still spent 4-5 hours after I'd finished all the story missions, just bumming around bc I was still so enamored of it. The story missions in Phantom Liberty are, in my opinion, better, bigger, and more emotional than the main game.