Most Muslim countries deny religious freedom to its citizens. Here's a list of countries

that forbid ceasing to be a Muslim:

Afghanistan, Bahrain, Comoros, Egypt, Iran, Iraq, Jordan, Kuwait, Malaysia, Maldives, Mauritania, Oman, Pakistan, Qatar, Saudi Arabia, Somalia, Sudan, Syria, UAE, Yemen.

In addition, the situation in Morocco is unclear; there is no law punishing this, but there is a fatwa threatening to kill.

Some parts of Northern Nigeria have adopted Muslim law. They are not supposed to apply it to non-Muslims, but it is not clear that Muslims there can safely stop.

For further reference.

I think countries should require immigrants and permanent residents to affirm, in a video for publication, that the principle of religious freedom applies to everyone, and that it includes the freedom to leave any religion as well as the freedom to join any religion.