Hi, I can help you to add the GTM tags, Can you please share the details of Google webmaster?
I have 6+ Years of experience, specialize in Search Engine Optimization (SEO), Youtube SEO, Local SEO, Technical SEO Audit, Keyword Research, On-Page Optimization, Off-Page Link Building & Content Strategy.
Please initiate the chat so that we can discuss in details and start the work asap.
Thank You
Saletify