It’s not bugs.
I get those occasionally too.
Handling, netting, fans etc.... it’s physical damage.
Also, some leaves when they are “born” have defects (twisting, underdeveloped leaf tissue) making them weaker and they tear in spots as they grow.
This is my personal experience and observation.
Have never found a single bug other than fungus gnats in any of my grows where these holes and tears have appeared.