As with any plant, the best way to understand what’s wrong with a succulent is to look at the roots. If the roots are either white or yellow, they’re perfectly normal, and the plant is healthy. If they are black or brown, it’s highly likely that your succulent is suffering from root rot. This is normally caused by overwatering.
However, the leaves of a succulent can also be a good indicator as to what’s wrong with your succulent. Although it’s normal for some leaves at the bottom of a succulent to naturally die over the course of its lifetime, if all of the leaves on your succulent start to look wrinkled, then your plant probably isn’t getting as much water as it needs.