Hey mate, looks like some hungry insects have had a picnic on your poor plant 😠.. h2o2 will kill on contact and is a very good way to kill them off. You also want a deterant as well. If you want to go all out get some sticky pads, a pot of apple cider vinegar and use some neem oil.
Neem oil will deter the pests, you mix it with water and soap and you will be able to use it as a foliar spray and you'll also be able to spray your soil.
I found some really good info on neem oil I'll send you a link