1) Be reminded that religion and morality WORK TOGETHER, still, they can "stand on their own". Meaning to say, they are not subject to each other. Being moral is not subject to being religious. Being religious also does not mean being moral. What religion do is to set what is right or wrong according to what they see and believe as right and wrong.
2) Morals is defined as the "set of rights and wrongs; a principle of right and wrong that guide one's person" All people have this. For an instance, in the general context, we may see polygamy as wrong, but to others, it is right to do and fine. We may call these people "immoral", still, that does not mean that they don't have morals since they still have this "guiding principle".
Just because someone doesn't believe in a God doesn't mean that they are immoral people. Most people, no matter their religion or philosophy are generally moral. Most people do not steal, cheat, or murder. In fact, there have been several examples of religious people who are actually quite mean and nasty to others.
Atheists are people that believe a God or Gods do not exist. These people believe that one lives, then when one dies that is it. No afterlife, no anything. Therefore, humanity and their interactions with it are all that they will be able to be a part of in their existence. In this position, one of the greatest things someone could do in their life is make a lasting impact on the world. By being moral, by doing good things, by acting as an amazing person throughout one's life, one can leave a greater impact and affect more people than any other lifestyle ever could. Not all people think like this, of course, but for those who do, I would like to say that it is clearly shown; Atheists can be just as moral if not more moral than religious people!
No need to follow a grandiose moral code if one does not believe in a higher being that sees all and judges in an afterlife.
There are laws that legislate some morality that society has deemed as "good." For instance it is illegal to murder, rape, assault someone, injure an animal. But the scope and breadth of a religious moral code cannot be covered by laws.
Religious people believe that a higher being sees all.
Scientific studies show cheating on a test is easier if the likelihood of getting "caught" is small. If one does not believe that anyone is looking they are more likely to cheat. Studies show religious persons donate more and more frequently to charity.
What defines "good" from "bad" if one is secular? Morality cannot be broken into a scientific formula.
Is eugenics good?
Is the death penalty good?
Is aborting girls rather than boys good?
Is aborting fetuses that may have down syndrome or other
Is exploiting women and girls on social media good?
The above are "legal" or were "legal" by U.S. society, thus "moral" by secular society.