That’s not true.

All have sinned and fall short of the glory of God (Romans 3:23)

We all, like sheep, have gone astray, each of us has turned to our own way (Isaiah 53:6)

You can only get to heaven and being right with God through Jesus.

I am the way and the truth and the life. No one comes to the Father except through me. (John 14:6)

If you could get to heaven simply by being good, why did Jesus have to die? Couldn’t he have just taught people how to be good?