Q.Blue Jacaranda Cracking
I believe this is a Blue Jacaranda tree but not entirely sure. The bark is cracking and peeling off the trunk, leaves turned yellow, some portion of the trunk peeled off. Thank you !!! please help me !

Certified GKH Gardening Expert
This seems to be an aged tree. They don't live a terribly long time, so it is probably getting too old and weak to sustain its own weight. This is common as the Jacaranda ages. You can choose to take the tree down, or let it fall apart on its own.
Here is an article that will help you to care for the tree:
https://www.gardeningknowhow.com/ornamental/trees/jacaranda/jacaranda-tree-information.htm