Water is the only fluid I drink, other than the occasional smoothie or beverage away from home. I keep a pitcher of filtered water in the fridge at all times, along with filtered water ice cubes. It makes it easy and it tastes so clean. Once you get used to it, you won't want anything else
It sounds like you are drinking something else with your meals? Remember that other beverages also contain water, so that counts too. Just make sure it's not something sugary that causes you to take in unnecessary calories. Otherwise, coffee, tea, juice, crystal light, and everything else still counts towards your daily fluid intake.
The original guidelines asked for "fluid" not specifically water. But after a while, doctors found it easier to just say water when asked what fluids were
It has since become a common myth that only water counts as water. The evidence and the best doctors in the world will tell you that it's fluid you are after, and even foods count towards your daily fluid intake. Grapes for example contain a lot of water.
In other words, you are probably getting more than you think