Questions about example sentences with, and the definition and usage of "Placebo"

A: It doesn’t have a real physical effect, but it ends up having an effect because the person thinks it is having an effect because they don’t know it’s a placebo... Ahh confusing! 😆 I’ll try again:

Example: a placebo drug used in experiments.
The drug contains nothing. A doctor gives a placebo to a patient. The patient thinks the placebo is a real, effective drug. Because they believe this, it might have some kind of positive effect on them. In reality, it has not changed any chemicals in their body because it’s just a placebo; it’s a “pretend” drug that doesn’t actually have anything in it.

This is so hard to explain, sorry!

A: a fake safe medicin meant to make the patient think he takes the real medicine

A: When a clinical trial is run to test a new drug, the placebo group do not get the active drug which is being tested, but a 'placebo' - similar to a sugar tablet, for example. No one in either group knows if they taking the actual drug or not.

A: When a medical substance is being tested on human test subjects, the people taking part in this study are usually split into two groups. One half gets the actual medicine, whereas the other half takes a placebo (something that resembles medicine, but has no effect, like sugar or sth like that). But everyone believes that they are taking the actual medicine.
This is done to rule out the possibilty that the medicine is only effective due to autosuggestion.

A: Pluh-SEE-bow

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A: 😂 Ok. You got me. I'm one of them.

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A: It would be better stated 'A lot of people believe 'in' the placebo effect.

And I know this isn't part of it but it would be "Please help me correct this".