First, I hear ya.
Basically I drink coffee and water. I wish I liked tea, but it tastes so terrible to me. Now when I have the need for something else other than just coffee or water, I squeeze and put lemon or grapefruit wedge(s) in my water to flavor it up. Other than that, nothing else. I envy the bliss of others that sip sip away on various delicious drinks, but acknowledging my addiction to sugar has helped me stay away. The hard part is eating at restaurants. I say around 50/50 are geared to serve water. Usually it's some tap water and you are never sure if it's filtered or not.
I stay away from fruit juices like the plague because they are sugar bombs. I was using those water flavors you can add, but they are filled with sugars also. Ugh... So I just use strong tasting fruit from the produce department to add flavor to my water.
I always get a question about the sugars in fruit. Turns out the sugar in fruit is bound to fiber that the body knows how to process. And both natural sugar and synthetic sweeteners are not bound to fiber and the body dumps it to the liver which automagically converts it to fat with insulin. The sad thing is I paid attention in middle and high school health and biology classes. They never talked about this. It was always calories in and calories out.
Good luck on your health journey. Oh and watch a documentary on Netflix called Fed Up. Pretty enlightening on the topic of sugars.