Years ago I did some music for Georgetown Brewing in Seattle, WA, for their entry into the Georgetown Super 8 Film Festival - a fun event for local businesses.  I'd like to put the music into a short video and have an old image of me playing some gig that I'd like to use as a backdrop.  

So the situation is - I tried the free background eraser in Canva but I'm wondering if there's a better program or if the original image is just too dark to begin with as it washed out.  If I can get a decent image I'd like to have that image slowly floating around the screen and my next question is there a free program that would easily let me do that?

Here's the original and new image.  Thanks