@Ro1239 Oh, man, I've been looking for him for a long time too but haven't found him! One way to find a person is to use the Google Images search function. More often than not, people search by pictures here. The likelihood of finding a person from an Instagram photo is low, but it is there. Open the site in your browser. Use the search box. Click on the button with the camera. You can upload images or provide links to them. Google will give you possible found similar pages. In my case, I had a hard time because I didn't even understand the line break for Insta captions. I had a hard time figuring it out, so I stopped looking. You might be able to do it! I hope you get lucky!
