Use "the freedom" when you discuss a specific freedom. Example: The freedom of speech. The Freedom of the press. The freedom of religion. The freedom of peaceable assembly. The freedom to petition the government for a redress of grievances. In the general contexts, we can refer to Our Freedom or our enjoyment of Freedom. We can say that generally, freedom from oppression is better than the oppression of freedom. Hope that helps. Write back if you need more assistance.