Facetime screenshot recovery

So i was having a face time call and took some screen shots to remember this moment in life when having fun and so on and so on.. the first one i took used a long time but eventualy came. All others after that never got in to my library..... these where important to me, i have good space on my phone, good internett and my phone wasnt glitching out or anything.. but i never got them

is there any way to recover those exact pictures?