The OP sounds young. Life with only one kidney is dangerous, as you may lose the one kidney in an accident or illness. Save your kidneys for yourself and your family. And your kidneys are likely to match the blood and tissue types of a family member in need.
I know a father who gave a kidney to his son. If dad had given it to strangers or an “organ bank” at a young age, his son might have had to wait for a suitable donor, or never have received the needed kidney.
Donating organs is not like donating blood. Blood grows back, organs don’t.