hey sir,you may have slugs in the garden,put some bowls with beer in the soil and maybe it shall solve the issue,make a home made neem oil based solution to spray your plant,1-2ml Neem oil per each 1 liter of water,or if you dont have neem oil,use garlic chops which you can leave in water 24 hours to get the juices out,then mix it with some liquid soap and spray your plants,it will repel bugs,plus try planting companions too,examples:basil,lavender,coriander,mint