Google analytics for firebase visit log doesn't appear - firebase

Question

Google analytics for Firebase is on my Next.js app. I deployed my site to Vercel. I can't see visit log in the first visit to my site in my Firebase console. But refresh my site, the log is well recorded.
app.tsx
import type { AppProps } from "next/app"
import Head from "next/head"
import { useEffect } from "react"
import { analytics } from "../firebaseConfig"
function MyApp({ Component, pageProps }: AppProps) {
const a = analytics
return (
<div>This is an example</div>
)
}
export default MyApp
firebaseConfig.ts
// Import the functions you need from the SDKs you need
import { FirebaseApp, initializeApp } from "firebase/app";
import { getAnalytics } from "firebase/analytics";
// TODO: Add SDKs for Firebase products that you want to use
// https://firebase.google.com/docs/web/setup#available-libraries
// Your web app's Firebase configuration
// For Firebase JS SDK v7.20.0 and later, measurementId is optional
const firebaseConfig = {
apiKey: process.env.NEXT_PUBLIC_API_KEY,
authDomain: process.env.NEXT_PUBLIC_AUTH_DOMAIN,
projectId: process.env.NEXT_PUBLIC_PROJECT_ID,
storageBucket: process.env.NEXT_PUBLIC_STORAGE_BUCKET,
messagingSenderId: process.env.NEXT_PUBLIC_MESSAGING_SENDER_ID,
appId: process.env.NEXT_PUBLIC_APP_ID,
measurementId: process.env.NEXT_PUBLIC_MEASURMENT_ID
};
// Initialize Firebase
const app = initializeApp(firebaseConfig);
const initAnalytics = (args: FirebaseApp) => {
if (typeof window !== 'undefined') {
return getAnalytics(args)
} else {
return null
}
}
const analytics = initAnalytics(app)
export { app, analytics }
These sticks only updates when I visit my site AND refresh it.