image icon available in the wysiwyg editor that appears on the new requests page for non signed users

I would like to have an image icon (image attachment) on the "submit a request" form for NON-SIGNED USERS. This feature is currently affecting my users because 90% of our tickets are based on a screenshot communication. We just started using request forms after years our users are used to simple email communication when they were able to share as many attachments as they needed, and now we have taken that away from them, which makes things a lot more difficult for them and especially for our support team. 

This problem happens on a daily basis. This is critical for our business as it is the most essential feature our users need to do when they submit a ticket; it's always about screenshots from our mobile game app. This lack affects our support productivity and our customer satisfaction score in a severe way that damages our business 

Are you currently using a workaround to solve this problem? (If yes, please explain) (1-2 sentences)

no! I wish I had a workaround so I wouldn't have to waste all this time. 

What would be your ideal solution to this problem? How would it work or function? (1-2 sentences)

Any button or option that can appear on the form so they will be able to attach an image would be great.