If you cant find anything i would like to point out that to contribute doesnt have to be an all or nothing affair. It's basically impossible to exist in the imperial cores economy without your money going to something horrific. What you can do though is reduce your impact. Buy things when theyre on sale only, and try not to use them as often for example. In general just reducing the amount of money you spend reduces how much you contribute to bad things. Reduce consumption overall. Learn to make things yourself, grow a garden, herbs, etc. Repair old clothes instead of replacing them. There are hand sewing tutorials on youtube, and i find it relaxing personally.

When you do shop maybe try going to local places, if theres a farmers market near you check them out this spring, and avoid big name stores. Its not just the products that support bad things, but the stores too. I don't drink soft drinks so i can't tell you an alternative tho. But don't want you to fail to find one, and just give up on the idea. Even reducing helps.