How to make Title Filed Required
You can indeed edit the exported config and then re-import it to make the title field mandatory.

Always be careful when editing config directly.

The config files generally follow the naming convention core.base_field_override.&lt;entity_type&gt;.&lt;bundle&gt;.title.yml.

There should be a required key which is set to false. Simply change false to true, save and then re-import your config.