Currently, it is not possible to list the user's privileges on object level in a particular database.
The privileges need to be checked from individual catalog table from the *acl column or using meta commands for respective objects. For example:
select relacl from pg_class where relname = 'test';
select nspacl from pg_namespace where nspname = 'test';
select spcacl from pg_tablespace where spcname = 'tblspc';
select proacl from pg_proc where proname = 'increment';
Please refer to a workaround shared in the below link, which makes use of the "Access privilege inquiry functions":
 https://www.enterprisedb.com/blog/list-user-privileges-postgresqlppas-11 https://www.postgresql.org/docs/11/functions-info.html