What's your question? Ask

This is generally a pollination problem. Short of importing a beehive to your garden, you might want to try pollinating yourself: https://www.gardeningknowhow.com/edible/vegetables/squash/pollinate-squash-by-hand.htm
https://www.gardeningknowhow.com/garden-how-to/beneficial/insect-pollination-process.htm
https://www.gardeningknowhow.com/garden-how-to/beneficial/creating-a-pollinator-garden.htm

You'll need to do some detective work to learn more about possible reasons for this: do the flowers not grow at all, do they fall off without turning into baby squash, do the little squash fall off before they grow, do the squash have soft spots or bumps or any other kind of mark before they fall off. All of these things are caused by different reasons. Also, discussions that
Here are a couple of articles that might be helpful: https://www.gardeningknowhow.com/edible/vegetables/squash/squash-fruit-falling-off-the-plant.htm
http://www.clemson.edu/extension/hgic/plants/vegetables/crops/

Nothing is cutting off or eating your blooms or baby squash. This is typical behavior for a squash plant. They will produce mostly male (non-fruiting) blossoms early in the season and will gradually start to produce more female blossoms as the season progresses. The male blossoms typically drop from the plant and seemingly disappear. Give it some time and you will see it start fruiting. Here is more information: https://www.gardeningknowhow.com/edible/vegetables/squash/squash-blossoms-falling-off-vine.htm

Usually if your losing fruit prematurely off the vine it is related to poor pollination. Blossom end rot is possible also. Do you see browning or issues with the ends of the vegetables? You may want to water late am if possible.
Seeing bees is a good sign, but they may not be getting the job done. I would try hand pollinating your plants and see if your result change.
Here are some links to help.

https://www.gardeningknowhow.com/edible/vegetables/zucchini/zucchini-fruit-fall-off-the-plant-before-they-are-full-grown.htm
https://www.gardeningknowhow.com/edible/vegetables/squash/pollinate-squash-by-hand.htm
https://www.gardeningknowhow.com/edible/vegetables/squash/pollinate-squash-by-hand.htm

Here are some articles that will help you that address rot in squash:

https://www.gardeningknowhow.com/edible/vegetables/squash/squash-pumpkin-rot-disease.htm

https://www.gardeningknowhow.com/edible/vegetables/squash/squash-blossom-end-rot-causes-and-treatment.htm

Happy gardening!

The white film is most likely powdery mildew. Here is an article that addresses how to deal with powdery mildew on squash:

https://www.gardeningknowhow.com/edible/vegetables/squash/powdery-mildew-in-squash.htm

Happy gardening!