Hello ! , i searched in google and youtube about how to make leaning while Running or walking , i found a video but it didn’t use the basic blueprint of movement of the character in third person . so how can i make a running with leaning ? , and i have the animations of leaning … Thank you in advance 
There are multiple ways to do this actually. I’ve seen people do it with Blend Spaces or with the Skeletal Control node Transform Modify Bone and pointing to the bone at which to rotate the character. I was going to cover this on an upcoming Twitch Stream as part of some character stuff either this week or next, keep an eye out on the official events thread for details.
Maybe this can help you: