Homeopathy relies on a belief in magic. There are no molecules of any active ingredient in homeopathic remedies. They are diluted out. Really. You have to believe that the spiritual memory of a substance makes an impression in water that then can cure disease.
Sometimes unsafe actual active ingredients are added to the nonexistent homeopathic remedy and sold under the pretense that they aren’t the “real” actives. That’s how people ended up losing their sense of smell permanently with zinc in “homeopathic” cold remedies.
In short, it’s a crock of nonsense peddled to escape laws that treatments must be safe and effective to be sold. You’re giving money to scammers if you pay for these things.