MySQL is a bit simpler even though pgadmin is a wonderful tool for learning postgres advantages. For me the difference became clear when needing to plot locations on a globe. PostGIS is super helpful
If I'd compare this to MySQL, where you must move tables one-by-one to another schema (nay database) with the new name to 'rename' your database [0], then I'm very happy with postgres' hierarchy structure.
[0] That is, if you're even allowed to, because if you have a trigger on your table, good luck renaming your database. See https://dev.mysql.com/doc/refman/8.0/en/rename-table.html
Also, database/schema/tables is great when doing things like multi-tenancy where you split customers by schema (which also makes horizontal scaling super easy if needed).
For example, when you type quit instead of quitting it instead prints out that you must type a different command to quit
All of \q, quit, and exit work fine starting psql 11?