Imagine you have a favorite toy you really like to play with, and nobody can tell you that you can't play with it. That's sort of like freedom of religion in Bulgaria.
In Bulgaria, people can choose to practice any religion they want. Some people follow a religion called Eastern Orthodoxy, which is the most common religion in Bulgaria. Other people might follow other religions like Islam, Catholicism, or Judaism.
The Bulgarian government can't tell people what religion to follow, and they can't punish people for practicing their religion. Everyone is free to go to their own church, mosque, or synagogue, and pray however they want.
However, just like with your favorite toy, sometimes people might not get along with others who practice a different religion. In Bulgaria, there have been some cases where people of different religions don't always agree or get along with each other. But, just like how you might share your toy with your friends, people in Bulgaria need to learn to respect each other's beliefs and live peacefully together.
Overall, freedom of religion in Bulgaria means that people can choose to worship whichever religion they want without fear of punishment or persecution from the government. It's a bit like being able to play with your favorite toy whenever you want, but also sharing it nicely with your friends.