This damage could be due to slugs or root weevils. 

You could try these things to help deter slugs:

Discourage slugs by creating lighter, drier conditions.

• Prune lower tree branches and shrubs to allow more sunlight to reach plants and soil.
• Divide or thin plants to improve air circulation, allowing the soil surface to dry out.
• Stake plants and prune lower leaves to raise plants off the soil and away from slugs.
• If planting in rows, make plant rows narrow (12 to 18 inches wide).
• If soil is constantly damp, improve drainage by amending soil with compost.
• While chopped leaves make an excellent mulch, too much can encourage slug habitat. Remove and compost extra leaves in spring.
• Remove or relocate materials where slugs hide such as containers, boards, pavers and flat stones.

Grow a water-wise garden

• Slugs are active in the evening; water plants in the morning so water is absorbed and plants dry.
  • Water the root zone at the base of the plant.
  • Avoid overhead watering.
  • Water by hand or use drip irrigation or soaker hoses.
  • Do not water leaves, flowers, fruit or vegetables.

More info can be found here:

https://extension.umn.edu/yard-and-garden-insects/slugs#create-a-landscape-less-attractive-to-slugs-298061

If these things do not help with the damage you're seeing, then you may be dealing with root weevils which most commonly affect evergreens—such as arborvitae, spruce and Japanese yew—raspberries and other brambles, grapes and many other plants, maybe you have some those plants nearby? You may need to utilize insecticide if they are causing lots of damage, however they are more of nuisance in and around homes. Make you you follow directions on the label if you do use a product.

https://extension.umn.edu/nuisance-insects/home-invading-weevils#other-weevils-1277461

https://www.canr.msu.edu/resources/strawberry-root-weevil