Having trouble in submitting form: Data validation error

Firstly, email will be a text field in your dataset.
https://support.wix.com/en/article/about-your-database-collection-fields

It would only be URL field if it is a web address or preceded by mailto or sms.
https://support.wix.com/en/article/field-type-support-and-limitations-in-the-data-manager

The same with telephone which has to be number field and date needs to be date and time field etc.