The youtube below does a walk thru of using MicrobiomePrescription.com with a person with ME/CFS, had COVID and Autism. MicrobiomePrescription.com is a free site with world class artificial intelligence system connected to a comprehensive database.
A few highlights from the video:
Correctly Predicted symptoms from their microbiome alone
Symptoms are strongly associated to particular microbiome patterns. These patterns can be used to “guess” the symptoms that they are likely to have. As shown below, for many people it is very accurate!

PREMISE: If we correct the microbiome dysbiosis. then the symptom should be less severe or disappear.
Suggestions agree with Clinical Experience of working

The antibiotics with [CFS] are ones that have been used in studies with some good responses reported. In particular, a similar combination is used successfully by Dr. Cecile Jadin with her patients.
Good and Bad Probiotics are Identified
For this person’s sample, 9 probiotics were computed to help and 33 probiotics were computed to hurt.
Goal is Improved Odds, not a Protocol
The suggestions will be different (often very different) from person to person. Each item is computed to independently help. Take what you are comfortable with. Items to avoid should be respected (when practical).
Example of a Cross Validated Report