alternatives?

what did you drink to replace alcohol while becoming sober?

i am trying to become sober but i am afraid of sugar. i feel like i have destroyed my body soo much that i have to find sugar free/natural things. i am only 22 years old but i have over done alcohol to the point i don't want to do it anymore but don't know how to stop or think i will be missing out if i don't do it. i have bad FOMO, when i project to friends i don't want to drink they kind of make me feel bad, or i'm missing out or they just constantly ask why am i not drinking and should just do it for the night. ik i have to be more assertive but i still need to find a replacement for something to drink to make it easier. i have tried (can) diet coke and (fountain/can) sprite but i want a healthier alternative.

with my friends i will become more assertive and if they don't accept it then i will have to end friendships... my boyfriend has said the same thing he is in his sober journey as well so i do have support from someone who does want to see the best for me.