What charities do you recommend donating to?

DKMS (Germany and America): https://en.wikipedia.org/wiki/DKMS

Welthungerhilfe (Germany): https://en.wikipedia.org/wiki/Welthungerhilfe

Given that the causes charities work on can be very personal, I recommend using https://www.charitynavigator.org/ to find one.

Not Susan Kamen. They have been exposed for donating zero to research while paying high executive salaries only to promote "awareness." The United Way similarly pays ridiculous executive salaries.

Rescue Mission