What brands do you avoid at all cost?
I don't keep up with the news all that much, and many of the reasons to avoid something don't make it there anyway. So I'm asking here to make a big list of things to avoid. It could be anything from bad security practices to really frustrating packaging. Working as a cashier myself, I definitely know there are plenty of brands I avoid purely on the basis that their product is a pain to stock.
On the flip side, what's the alternative? If you avoid Pepsi, for example, what do you turn to instead?
Literally all of them. Any big company is doing evil things, and I doubt there is an exception to that rule. Shop local, grocery shop at a co-op, eat local, prioritize products you know are actually made in your home country. Most importantly; just buy less. Repair the things you own, take care of them, borrow from friends. Never buy something "surprisingly cheap".