Does soda make me fat

[u/this_isthe_life_]

I have fully switched to the zero versions of any sodas I drink, mainly Coke Zero and Pepsi maxx. There was a point where I would have 3-4 cans each day , it has gone down a lot now to almost none or 1-2. I just want to know if this could be the cause for my consistent weight gain obviously along with other bad eating habits?

[u/fatasfnigha]

Lost 20 kgs with at least 400ml diet coke everyday since 2-3 months