Click a picture (HD)/video message with group of people (5-6 ateast more the better) with a poster wishing my friend Happy birthday

Hi I want to work on a project where people across the world (in groups) greet my friend happy birthday written on a poster either just the picture or short video wishing her birthday (in english or native language) and I will put it in a single video. I can hire multiple freelancers for this for each picture. Per picture cost would be 10-15$ max.