install this history from this link, when your package is installed successfully, create a file history.js and put the below code in this file.

import {createBrowserHistory} from 'history';

export default createBrowserHistory();

import the history file in this file like import history from './history', then you will get the history props and you can console the history props and check which props are coming and you will find pathname in the history props and make a condition and as you can see in the code below.

import React from "react";
import { BrowserRouter, Routes, Route } from "react-router-dom";
import history from './history'
import Navbar from "./components/navbar/navbar";
import Intro from "./components/intro/intro";
import Services from "./components/services/services";
import Experience from "./components/experience/experience";
import TrelloClone from "./pages/TrelloClone/TrelloClone";
import './App.css'

function App() {
  return (
    <div className="App">
      <BrowserRouter>
        <Navbar />
        <Routes>
          {/* <Route path="/vanillajs" element={SpotifyClone} />
          <Route path="/djangoapi" element={InstagramClone} /> */}
          <Route path="/reactjs" element={<TrelloClone />} />
        </Routes>
      </BrowserRouter>
      {history?.location?.pathname !== '/reactjs' && 
     <>
      <Intro />
      <Services />
      <Experience />
     </>
      }
    </div>
  );
}

export default App;