art gallery image attachment size

https://mktartist.com/portfolio/?attachment_id=96

I am trying to reduce the number of click to see an image.

I don’t want the image to show medium . . . i want it to show full size instead of needing to click it again to show full size.

No I don’t want to set the link to “image” instead of “page” because I need to show the images info.

Any suggestions on how i can recode it to show full size? the MEDIA option for “medium” isn’t changing anything either.