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Your garden plants need 2-4 inches of water a week. It is better to have 1-2 long waterings per week than water everyday for a short period. Long waterings encourage deeper roots and healthier plants.

It sounds like they are under pollinated. They may have been pollinated a bit by the wind but not enough to really fill them in. This article will help you with attracting pollinators to help with pollinating:
https://www.gardeningknowhow.com/garden-how-to/beneficial/creating-a-pollinator-garden.htm

Yellow is technically the "ripe" stage of cucumbers, though they don't taste very good and we pick them in the green stage for a tasty harvest.

When plants push their fruit into ripening early, this typically means that the plant is feeling stressed and is trying to get to the seed stage fast.

While you water every other day, I would check that the water is penetrating the soil well. You may need to water more deeply in order to get the water into the soil. Double check for pests again. Some can be quite small and crafty.

This article should help: https://www.gardeningknowhow.com/edible/vegetables/cucumber/what-causes-bitter-cucumber.htm

You probably have a grub or a worm of some kind that is affecting your peppers. This article will help: https://www.gardeningknowhow.com/edible/vegetables/pepper/worms-on-peppers.htm

If the spot is strictly on the bottom of the fruit, then it is likely blossom end rot. Here is additinal info: https://www.gardeningknowhow.com/edible/vegetables/pepper/pepper-blossom-end-rot.htm

As for the cucumbers, this article should help: https://www.gardeningknowhow.com/edible/vegetables/cucumber/deformed-cucumbers.htm

It sounds like a pollination issue. You will need to hand pollinate. Cucumbers are identical to melons on how they pollinate, so this article will also apply to cucumbers: https://www.gardeningknowhow.com/edible/fruits/melons/hand-pollinating-melons.htm