Hi,
If I understand correctly, you want to prioritize the results, that match the product tags? I checked your index table configuration, but the product tags are not selected for the index, so they are not searched in the first place: https://i.imgur.com/kU4dj0q.png
First, you should make sure to select that taxonomy, and then re-index the database. That will very likely change the results order when matching the product tags.
