Go to images.google.com and click the camera icon in the search bar. This will open the Search by image tool.
Either paste the URL of the image you want to search for into the Paste image link box and click Search, or upload an image from your device by clicking the Upload an image button.
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Alternatively, you can also use Google Lens to search for similar images. To do this, open the Google app on your device, tap the camera icon in the search bar, and then point your camera at the image you want to search for. This will open a window with information about the image, including similar images.
That's it! By following these steps, you can easily insert an image into Google Search to find similar pictures or information about the image.