Can we be good

God in Mark 10 says ‘No one can be good except God’. No one can be righteous according to Romans 3:10.

But then if it’s no longer us who live but Christ who live in us, can we not call ourselves good? Because it’s no longer us but Christ.

We are filled with goodness (Romans 15:14) but how can good fruits come from something not good? It’s either we’re good or not right? We aren’t but Christ is.