The ladybug looking beetle was most likely a Golden Tortise beetle which will make holes in the foliage but I've never seen them eat a bloom. I like them and don't kill them because they are quite pretty. They can change their shell color and either look a bit like a ladybug or are a beautiful metallic gold color.

Hmmm...I'd say caterpillar damage as they are fond of eating the most tender parts of the petals (which is the secondary fold area0 and leaving the tougher parts that are part of the support ribs at the center of the petals...

There is something unusual in the throat of the bloom that has the parts eaten away and a closeup shows that the perpetrator left it's calling card deposited on the base of the petal at the 3 o'clock position...

Sending you a cropped enlarged closeup for your review...

I TOTALLY agree with Ron.
I have the same problem.

The 'holes' are made before the bloom opens are are usually perfectly shaped all around the bloom.

I sometimes find 'those things' down in the throat of my MGs. aarrgggg!

If you feel you must spray, Neem oil is good - or, just wait until they 'fly away'