The url link is for something that already is on the internet .
You will have to type some html code so the interwebs knows where the image source is.
Img src=
So img src= is what you need. You need a < in front of the i in img .
You will also need a > at the end of your code .
Here is the code for an image I will be posting.
Img src=https://i.postimg.cc/5ynYqTGy/4-F482040-6952-424-E-9-BBC-8-BF7651-B200-C.jpg
You will notice I did not include the < at the start or the > at the end, ( the g in jpg)
Once I include those, the html code is complete and I post this picture.
Html sandbox Html sandbox has much more information.
Needs fixing...