For anyone that ran into the same issue as me, after installing PostgreSQL and setting up password I still ran into an authorization error. The issue was that while my default user existed, a corresponding database hadn't been initialized. To fix I removed authorization following these instructions:
@MikeRund please ensure you include what you researched/found and what the ultimate solution was before closing an issue otherwise it's a dead-end. https://xkcd.com/979/
For anyone that ran into the same issue as me, after installing PostgreSQL and setting up password I still ran into an authorization error. The issue was that while my default user existed, a corresponding database hadn't been initialized. To fix I removed authorization following these instructions:
https://www.postgresqltutorial.com/postgresql-administration/postgresql-reset-password/
And then created a database (where {user} is your username):
CREATE DATABASE {user} OWNER {user};
After logging out, resetting the auth method and restarting the issue was fixed.