My local food bank is my favorite place to donate and volunteer at. My friend also works as a CASA so I donate to them as well (link is for the national organization, but they’re may be a local group you can donate to directly). Other than that, look around your area for local nonprofits. There are lots of local charities that work with kids, help solve local problems, etc that can always use some financial help. There are several organizations that you can go to if you want to vet and check on the charities to make sure they’re legit.
I never played the games but was able to pick up enough through context clues about what each group is all about and generally what’s going on. I do have lots of questions about the specifics of each group, but I’m hoping that in future episodes (I am only a few episodes in) and seasons they flesh things out a bit more to fill in some of the more mysterious aspects of the show.