What is your definition of religion?
A God?
Or a concept?
Monotheist?
Does it matter?
How do you, or do you separate religion from a cult?
How many “religions” do you recognize?
A religion is a human faith and trust in a deity or in an entity claiming the attributes of deity.
Cult is a informal term. It comes from the Latin colere, meaning circle. Like, a small group’s private religion. At one point the early church would have been considered a cult had you asked the religious community outside of it. It’s only its widespread nominal earthly success that has it NOT being called a cult today.
There are a plethora of religions. The bible says there are many “Lords” and many “gods.” And the evil apparition called Allah in Islam, is one of them.
Or if you will, group of deities, for religions that go that way. This isn’t really an issue in the definition.
We are right to believe that there really could only be one entirely “good” religion. This is where Christian denominations get into arguments, not realizing they are all flawed implementations of the ideal that man was made for.