I'm pretty new to HTML and CSS myself, but from what I know, the image has to be in the same folder and have the .html in the image's file name. It should be relatively simple to move the image's location, so no need to stress there. It will also help to shorten the image's link. Here's an example tag:

<(img src="cvpfp.html.jpeg" alt="Profile Picture">

(Please don't include the parentheses in the tag, that just helps it show up on stack overflow) In this case, I had emailed the image to myself from my phone and downloaded it. my source consists of the file name, the document type, and the image type.

I really hope this helps! Please let me know if I can clarify anything or answer any other questions.