I think I've found the hiccup with the DB server IaC configuration

playbooks/IaC_database.yml

@@ -178,7 +178,6 @@
         state: quadlet
         quadlet_filename: "postgres-quadlet"
         quadlet_file_mode: "0640"
-        user: "2000"
         ports:
           - "5432:5432"
         volumes:
@@ -204,7 +203,6 @@
         state: quadlet
         quadlet_filename: "mysql-quadlet"
         quadlet_file_mode: "0640"
-        user: "2001"
         ports:
           - "3306:3306"
         volumes:
@@ -232,4 +230,16 @@
       loop:
         - psql
         - mysql
+
+    - name: Run systemctl --user start for each quadlet
+      ansible.builtin.systemd_service:
+        name: "{{ item.service }}"
+        scope: user
+        state: started
+      become_user: "{{ item.user }}"
+      loop:
+        - service: postgres-quadlet.service
+          user: psql
+        - service: mysql-quadlet.service
+          user: mysql