Amybeth McNulty was 13 in Morgan when she played the character 'Morgan (age 10)'.
That was over 6 years ago in 2016.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 21, and has starred in 4 movies in total, 2 of those since Morgan was released.
In Morgan, I think Amybeth McNulty looks: