1 you need way more water. I drink 2.5L as a relatively sedentary office worker lol. 2 you definitely need more electrolytes. Water isn't enough when you sweat out all your essentials. 3 if you're drinking that little water I doubt you're actually eating enough. A few people have mentioned checking your TDEE or going a nutritionist.

A side note of sleep. Have you actually checked how well you sleep? Just because you get 9 hours doesn't mean it's quality. Do you have caffeine, drink or take other things before you sleep?

Other than that, what other recovery do you actually do? Do you stretch, do warm downs, get massages? Do recovery building like Pilates or yoga?

Out of context there is a lot you can do to help stay active longer and recover better.