Не могу сделать переход между компонентами в React

 import { BrowserRouter as Router, Routes, Route } from "react-router-dom"; 
import Glav from "./block-element/glav/Glav.jsx"; 
import First_page from "./block-element/first_page/first_page"; 
import Footer from "./block-element/footer/Footer.jsx"; 
 
function App() { 
  return ( 
     
       
       
        } /> 
         
       
     
  ); 
} 

 import React from "react"; 
import { Link, NavLink } from "react-router-dom"; 
 
import "./pages.scss"; 
 
function Pages() { 
  return ( 
    <> 
      
 
        
 
        
 
   Click
          

 import React from "react"; 
import Header from "../header/Header.jsx"; 
import Footer from "../footer/Footer.jsx";

function Glav() { 
  return ( 
    <> 
      
 
      
 
        
 
          
 
             
              Главная 
             
             
              Стройматериалы