Okay but the example you linked to this time is in my option very advanced and complicated for a newbie like me → ( [SOLVED] How to upload from BUFFER ? | Velo by Wix ) and none of you was even mentioning how to insert the image to the current member. I honestly only got confused with the feeling of giving up.
Do you really mean that I should use HTML now instead of the ordinary way of coding? 
How can it be so extremely hard to upload a simple profile image to the current logged in member without the need of a long and complicated code? You may think that I am stupid but I can guarantee you that many others have the same frustrating problem. Why are there no “clear and easy” instructions about such an important topic?