Hi Steemian, Adil here :)

• Can't add pictures to Comments?
• I have a solution for you.

Use imgbb.com

• It's Free
• It's Really Quick
• Upload an image to imgbb.com
• Right Click + Copy Image Address
• Paste on your Comment.
• Done.

Update*

For Mobile devices:

• Upload an image to imgbb.com
• Open image in a new tab
• Copy the link
• Paste on your Comment.
• Done.

Hope this was of Value to You, if so I only ask that you Upvote and if you want to be Really awesome - Resteem :)