In the process of making landscape figures, the most "popular" material is gypsum. Unfortunately, it is not particularly durable, so it is not surprising that garden gnomes and the like are damaged every now and then.
If you don't agree to buy new outdoor figures for your garden every season, consider restoring them.
Let's start with something simple - color restoration.
For this, the most common acrylic paints will do, and a layer of special varnish will help to fix them.
If the damage is not limited to loss of color and some parts of the figurine have chipped off, put them back in place using superglue.
What to do if the fallen pieces have disappeared somewhere? To restore the chipped area, prepare a mass of gypsum and 15% PVA glue.
By the way, you can also use this same material prepared with your own hands to repair cracks on the figurine.
Important: before you start restoration, apply glue to the damaged area so that a film forms on it. It is needed to protect the damaged area from moisture from the plaster being applied to it again.