Keeping sheets private while using automated emails on form submissions

I currently have a public dashboard where individuals around the company will submit a form for my team to review. The sheet that the from filters into should be and needs to be kept private as there are internal details that need to be housed for each submission, almost like having internal use columns to categorize and assign ownership while also keeping track of the overall details. I have set up automated emails to alert my external submitters of certain changes to their "ticket". I have used the advanced options to only show the columns they need on the email, HOWEVER, the link to the sheet continues to show in their auto email.

How can I remove this? I want to make sure I don't receive hundreds of requests for access to the sheet that I will have to decline.