I did ask the same question quite often, and still do. Since you asked about product / industry, I'll skip the question of wether or not e.g. Meta is a morally acceptable employer.
Now, what I realized, is that the answer to that question is highly individual. And not straight forward or clear cut. I drew my line long ago at small arms for example, but I don't mind working on defence projects. Others see no problem working in ammunitions, while refusing jobs in high pollution industries like chemicals.
One thing I did learn so, as long as you are not a doctor, nurse or emergency / disaster relief worker, the litterally life saving jobs are far and few between. In the end, idealism, and highly appreciate people that have and maintain it, doesn't put food on the table. And as soon as you meed to be paid, there trade offs. Just what those trade offs are is up to you.
Not very specific advice so far, but there is some good news: whatever your skill set, someone somewhere has a need for it. And someone will have need for it to do good (TM) stuff. One option, unless you want to go to the front lines of social work and development aide work (in which case, if you can upend your life to do so, by all means try it), try looking for NGOs, large and small, doing that kind of work. Or rather the kind of work that aligns best with your morals, be that environmentalists or work in poor, developing countries. Pay will be most likely low, but it can be more fulfilling. Or consider some UN orgs, e.g. the UNHCR. They do direly needed work that directly benefits people on the ground.
As long as you stay in whatever industry, be aware that profits, money and power have a tendency to trump almost everything (even if not every mega corps is either Weyland-Yutani or the Umbrella Corp.). And as soon as physical supply chains get involved, well, tough luck. Because either zhe raw material and sourcing end, or the recycling end, there will a poor, litteral kid somewhere doing hazardous work for little to no pay in order not to starve. But, and that is the bad news, there is nothing an individual can about that indirect harm our way of life causes.
You can look at the very list players doing as little direct harm as possible (by your definition), or actively try to mitigate some of the harm done.
But please, try to keep your idealism alive and stay optimistic, there are already enough old cynic farts like myself out there. We, and the world, can use some more idealists to actually change things for the better.