Image do not load in react.js – Html

So very simply I want to put an image in my page. Previously I put a background image on it, it is working well.
I don’t get any error just a little picture icon on the screen.
I use React.js
I keep the pictures in src/assets folder

The images in jpg format I try to change it in png this does not helped. I think I just not notice something simple. I tried to add the image with simple html method, and with react component method as well. I write a code example below.

App.js

 import React from 'react';
 import './App.css';
 import Television from './components/television/Television'

 export default function App() {
  const title = 'xy';

  return (
    <div className="App">
      <h1>Welcome on {title}</h1>
      <div className='television'>
        <img src='assets/television.jpg'/>
      </div>
      <Television/>
    </div>
  );
}

Television.js

import React from "react";

function Television() {
    return (
        <div>
            <img src="assets/television.jpg"/>
        </div>
    )
}

export default Television;

I know this two way the same I just tried it. I attach a screen about the little picture images on the screen.

This is it.