Google ads conversion from Google doc form to Google adwords

As a business, I am looking to improve the conversion tracking of my online marketing campaigns. I set google doc form in my website to get leads just like a contact module. I do have google tag manager installed with conversion based on click, what i would like to do it s having conversion from this form submitted. I tried with a workflow just like "zapier" and "make" and there are useful applet, problem is they are asking "gclid" i was not able to get out from the campaign. If you able to solve this and set tracking for this form submission linked to google ads would be appreciated