With Google Tag Manager, I could install many custom tags, including Linkedin and Google Analytics tags. I know it is possible to install Google Tag Manager but there are no good instructions around, and you don't support adding code into the body tag (that Google Tag Manager installation instructions require but luckily, it works without it) If you had Google Tag Manager support, you wouldn't need many separate integrations (like Facebook Pixel, which you already have) since that kind of code can be installed using Google Tag Manager. Also, I miss server-side tags, a feature of Google Tag Manager that NewZenler doesn't support, and this is something I cannot bypass right now. So please implement that as well if possible technically