I can understand your frustration. Right now it feels that we small people can’t do anything to do good in the world. There are greedy capitalist everywhere. It is nearly impossible to understand what damage ones desicion could make. If our desicions even could make a difference.
But the thing is, you can’t overlook everything. It’s a gouverments job to keep an eye over Corporations.
But that doesn’t mean, that you can’t do anything. You can search for Informations and make yourself aware of those topics. You can support workers and strikes. You could limit yourself on what stuff you are comsuming.
You don’t have to boycott every major company and every Product. You just could make a list about everything you really need and what you are really looking forward to. So you can balance your need for morality and fun.