Q.Blackberry plant
We bought a blackberry plant and it had a few blackberries in bloom. After a week, it started turning brown even though I watered them daily. I don’t want it to die. What can I do? It looks brittle.

How is the soil? Is it draining well? Make sure the soil is moist but not soggy.
The link below give more information on proper planting and the growing conditions needed by Blackberry plants.
https://www.gardeningknowhow.com/edible/fruits/blackberries/growing-blackberry-bushes.htm