Querying by a repeater row is problematic. There are literally hundreds of topics on this forum on the subject. There is an example of how to do this on this page, but I don’t know if it still works https://www.advancedcustomfields.com/resources/query-posts-custom-fields/
You should read my opinion on this and then decide how you want to go https://acfextras.com/dont-query-repeaters/
