do you want to add gtm script?

gtm.ts

type WindowWithDataLayer = Window & {
  dataLayer: Record<string, any>[];
};

declare const window: WindowWithDataLayer;

export const GTM_ID = process.env.NEXT_PUBLIC_GTM;

export const pageview = (url: string) => {
  if (typeof window.dataLayer !== "undefined") {
    window.dataLayer.push({
      event: "pageview",
      page: url,
    });
  } else {
    console.log({
      event: "pageview",
      page: url,
    });
  }
};

analytics.tsx

"use client";

import { usePathname, useSearchParams } from "next/navigation";
import Script from "next/script";
import { useEffect } from "react";

import { GTM_ID, pageview } from "@/utils/lib/gtm";

const Analytics = () => {
  const pathname = usePathname();
  const searchParams = useSearchParams();

  useEffect(() => {
    if (pathname) {
      pageview(pathname);
    }
  }, [pathname, searchParams]);

  if (process.env.NEXT_PUBLIC_VERCEL_ENV === "development") {
    return null;
  }

  return (
    <>
      <noscript>
        <iframe
          src={`https://www.googletagmanager.com/ns.html?id=YOUR_GTM_ID`}
          height="0"
          width="0"
          style={{ display: "none", visibility: "hidden" }}
        />
      </noscript>
      <Script
        id="gtm-script"
        strategy="afterInteractive"
        dangerouslySetInnerHTML={{
          __html: `
    (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
    'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
    })(window,document,'script','dataLayer', 'YOUR_GTM_ID');
  `,
        }}
      />
    </>
  );
};
export default Analytics;

and import this inside root layout wrapped with Suspense

Thank you for your help, but what I mean is that those scripts are added by the administrator, and when I get that sequence, I have to add them to the head tag

fetch your script then use inside your script like below:

<script dangerouslySetInnerHTML={{ __html: YOUR_GTM_SCRIPT }} />

it warning like this

those script format not looks like true if you check my script you can see you should format it like mine

you can paste your header and body tags here?