SharePoint List mail merge Word templates

I have over 30 templates located located under the new button and templates in sharepoint.   For now I am trying to create a less sophisticated process to get us started.   Before I use Microsoft flow to fill in the field using plain text control I would 1st like to get my feet wet by using a template and the mail merge function that exists in Microsoft excel to fill in the fields.  In the desktop version of Microsoft excel I am able to pull up the mail merge content control form that identifies each mail merge field in the word template.   However when I pull the template in sthe harepoint environment as a template I do not see anywhere where I can pull up the same form and just run through it to fill out each mail merge field.  Is there a way to do this in sharepoint? Or this does not exist the sharepoint environment. Thank you for reading.