Answer 1

You need to upload your image to internet so that the others can see it. There are two free hosts :
How to host an image, the imgbb way, by Farhanaz 🌟
https://code.sololearn.com/Wy3lrXNwGsgJ/?ref=app
[Tutorial] Upload content from your device to CodePlayground - The Dropbox way
https://code.sololearn.com/WW6t4B73kJVz/?ref=app
This question has been asked and can be searched for. Users of this Q&A forum are recommended to use search feature before asking questions to avoid duplicates.
https://www.sololearn.com/Discuss/1316935/?ref=app
Search bar is here:
https://www.sololearn.com/post/10362/?ref=app
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Answer 2

You cannot use Sololearn's Playground for getting an image in your device. As the code is interpreted in Sololearn's server, you cannot get the image. But if you are opening it in Chrome or some other browser then you can see the image

Answer 3

Try doing a search through Q&A.
You will find heaps of answers and techniques

Answer 4

Ohhh okayyy
Thanks a lot

Answer 5

Thank you all

Answer 6

You may find answer in https://www.pagetutor.com/html_tutor/missing.html, and You may also go through https://www.htmlgoodies.com/primers/html/article.php/3478181/Basic-HTML-Images.htm