I am new to the forum

[img]https://i52.photobucket.com/albums/g14/cherryredcutie/102_4993.jpg[/img]
[img]https://i52.photobucket.com/albums/g14/cherryredcutie/102_4996.jpg[/img]
[img]https://i52.photobucket.com/albums/g14/cherryredcutie/102_4994.jpg[/img]
[img]https://i52.photobucket.com/albums/g14/cherryredcutie/102_4995.jpg[/img]
The second bonsai with the few leaves is just recovering from being not watered enough (most of the leaves had fallen off), the person who was supposed to look after them when I was on holiday did a really bad job. Luckily there are already new leaves showing up.
The first bonsai is a bit pooly as well, the leaves are hanging down a bit and some of them have turned yellow and have fallen off, can that be also a sign of not enough water?
Thanks for your help in advance!
Anne