Yes, people can certainly be "good" without being members of an organized religion. Being good or having a moral compass does not solely depend on religious affiliation. Ethical behavior, empathy, compassion, and kindness are values that can be present in individuals with or without religious beliefs.
Morality and ethics are shaped by a combination of factors, including culture, family upbringing, societal norms, personal experiences, and personal reflection. Many people hold strong ethical principles and strive to do good in the world based on their internal sense of right and wrong, irrespective of religious beliefs.
There are countless individuals who identify as secular, agnostic, atheist, or simply non-religious, yet they actively contribute to society, engage in charitable acts, and work to make the world a better place. Altruism, empathy, and moral behavior are not exclusive to religious individuals; they are traits that can be found across diverse belief systems and worldviews.
Furthermore, various philosophical and ethical frameworks exist outside of organized religions that guide individuals in their pursuit of leading moral and ethical lives. For example, secular humanism emphasizes human values, reason, and compassion as a basis for ethical decision-making.
Ultimately, what makes a person "good" is a complex and multi-faceted question, and it is not limited to religious belief. Many people, regardless of their religious affiliations or lack thereof, strive to live morally and ethically and contribute positively to their communities and the world.