Q.Why would my burning bushes be turning red and losing its leaves at the beginning of August. Last year there was aphids this year
I don’t see any bugs? Is there any way to Help the Bushes I have 6 and I’m worried I will lose them.?

Certified GKH Gardening Expert
They will normally turn red. This will be expected. If you are experiencing leaf drop, then I would mark it up to a fungal infection in the soil. There are several ways to control this, but using wettable sulfur and dolomitic lime will be the safest, and most effective way to control this without harm to the soil or plants.
This will prevent, and spot cure any infections, especially if you live in an area that remains wet for long periods of time.
This article will give you more information on the care of these: https://www.gardeningknowhow.com/ornamental/shrubs/burning-bush/burning-bush-care.htm