Hi,
I have been trying to connect to a database in postgreSQL I have not been succesful because I think I am not getting the instance right or something. I have used localhost as the instance since postgreSQL was installed on my local computer. Forgive me if I am not getting the explanation right because I am a novice in this area. Any help navigating around this? Thank you.
With out some more information, have you done the following: https://pro.arcgis.com/en/pro-app/latest/help/data/geodatabases/manage-postgresql/configure-postgres...
https://pro.arcgis.com/en/pro-app/latest/help/data/geodatabases/manage-postgresql/connect-postgresql...
Usually once you have the above correct, you should be able to make a connection.
What version of Pro and version of PostgreSQL are you using?
Recommendation: you may want to move this question to the Data Management area in the Community.