I’m aware of Egypt using Yak-11’s however i didn’t add it mainly for 2 reasons. Firstly it would be at a low BR, i’m already stretching and overtiering the Syrian Texans in order to make it work, the Yak-11 would suffer the same fate trading defensive armaments for performance. Secondly and more critically, I don’t know where they mounted the Sakr’s on the wing, the quantity they use and if they take up the slot for the FAB-100’'s and gunpods or not. I may re consider once we know how the Egyptians mounted their Sakr’s.
The images that are present in the sources do show Egyptian Yak-11’s do show them in Yemen judging by the image quality and the terrain being not too far off from the Yemeni B-33 which was taken a few years before