Replacement is a useful strategy. You've heard of smokers and their straws and carrots. You can replace soda with la Croix.
I long ago quit soda, and in fact recently (and with no drama) basically quit a pint-of-cold-brew/4-6 shots/day espresso habit. Pretty much the only beverage with any taste I drink these days contains alcohol (that's a story for another day).
Mostly I only drink plain flat water. But I can't stomach that fizzy, bitter junk.
Funniest thing about my soda addiction is the only thing that makes me crave it is ice cream. Which is so funny; try drinking a coke after ice cream. It tastes terrible because you can't taste the sugar in the soda anymore, after the sugar rush of the ice cream. But I still crave it. All I can figure is my brain has associated the sugar rush with a caffeine hit, and my brain isn't happy when it gets sugar but no caffeine.
I find waters have quite a variety of tastes, my favourite by far is San Pellegrino. It also works well with a good few shakes of Angostura bitters.
This Is Why You Should Stop Drinking LaCroix https://www.eatthis.com/la-croix-healthy/
Why Your LaCroix Obsession Isn't So Healthy https://www.health.com/food/why-your-lacroix-obsession-isnt-...
"Due to their acidic pH, flavored sparkling waters can be nearly as corrosive as orange juice when exposed to human teeth for just 30 minutes, according to researchers at the University of Birmingham and Birmingham Dental Hospital."
"BPA-based plastics are used to line food and drink cans to protect against metal contamination, but these endocrine disruptors bring on a host of health problems on their own. ... FWIW, the state of California, for example, includes BPA in its Proposition 65 list of toxic chemicals that are 'known to cause cancer or birth defects or other reproductive harm.'"
"One study published in the journal Obesity Research and Clinical Practicethis link opens in a new tab found that rats that had carbonated drinks ate more and gained more weight over a six-month period than those that drank flat drinks or plain water. The bubbly-bev rats also had more of the appetite-increasing hormone ghrelin, which signals your body to eat more, which can explain the weight gain."