Can anyone help me to save my Cherry Laurel

First, Sorry for my poor English and I will try my best to express myself.
Second, I'm used to living in the city and have no idea about gardening, so sorry for my stupid question.



My hedge plant (cherry laurel I guess) has had many holes on its leave since I moved in last winter. I haven't done anything and pray for it will recover after the winter. But I'm too naive. When I saw there were some green healthy leaves grow in this spring, I bought some spray that claimed that can kill the bacteria but used it a few times. But it doesn't work as expected and even the new green leave are infected!

Can anyone tell me what's wrong with my plant and how to save it?

 

Plant is Viburburum Tinus
Viburburum Beetle larve, look on the under side of the new leaves you will see the larve (looks like a very small caterpillar) the larve do the most damage so you have to break the cycle, the Viburum plant will recover in time but you need to control the larve now and again next spring, you will also get the V beetle eating the leaves later on but don't do as much damage but also may need to be controled

Here is a picture of the larve (very small) and sometime they may be black in colour

 

Thank you very much! Is there any spray and medicine that can help to solve the problem?
More than 90% of the leave has holes or black spots on them, so should I remove the serious ones as much as I can?

 

There is a few spray which you can use, but i don't know the names of any sprays as i don't use them and the names seem to keep changing Sorry
The plant will look untidy for a few months but will recover, the main thing is to stop/break the life cycle of the V Beetle

 

Thanks a lot