Israel had a similar problem and was rebuked by Isaiah:
You turn things upside down!shall the potter be regarded as the clay, that the thing made should say of itsmaker,“He did not make me”;or the thing formed say of him who formed it,“He has no understanding?” (Isaiah 29:16)
The modern brand of Christianity will never be approved by God as long as it targets men and not the Divine.
Until we set things aright with God, Christianity will continue to decline. There will be fewer adherents exerting less and less influence in a devilish world. We are the servants of the Most High. Not the other way around.