I think I'm in heaven!!! I tried the suggestion from
@navaja77 and I can now post to Instagram from my desktop!!! The hardest part was finding out where the extension was located. It said it was installed, but I couldn't find it anywhere. Until I looked to the right of the Chrome address bar (to the right of the bookmark star) and there it was. I'm attaching a small screenshot here for those who may want to explore this option. The instagram extension is the one pictured on the far right of my screenshot. It allowed me to upload my photo, to adjust it (since I don't do square layouts), and add text! So easy, no funky looking developer code, just Instagram on my desktop.
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Thanks
@bestcee for your help, but I'm good with Desktop for Instagram's extension.