https://www.gotquestions.org/born-again.html
Not. Even. Once.
With such a platform, she only spoke in vague terms that can be attributed to most every religion in the world. And during her leadership, Christian principles dissolved, churches were turned into mosques as Britain slips further and further into secular humanism, the exact opposite of what a sovereign is supposed to accomplish.
How can a sovereign proclaiming to know Christ, with a platform like hers, fail to call her subjects to examine themselves to ensure they are in the faith and not be deceived? How is that even possible?
Here is the answer:
"And no marvel; for Satan himself is transformed into an angel of light. Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works."
2 Corinthians 11:14-15
Elizabeth II was to the Angican Church as she was to the state of Great Britain, a symbolic head, unlike the British prime minister or the Archbishop of Cantebury. The former is the actual leader of Great Britain and the leter the actual head of the Anglican Church. The former has the role to speak for the positions of the government on matters of state, and the later has the role of speaking for the Anglican church on ecciesiastic or theological matters; not the Queen/Monarch.
You expected from the Queen what was not in her official duties to do.