This video concerns itself with retargeting a Mixamo animation from a Y-Bot mannequin to the Unreal Engine mannequin, taking care of the fact that the bone names in the skeletal meshes are going to be different.
Github repository for the fbx files used in this video: https://github.com/cpp-codemonkey/UE5-CppAI-Files
Link to video on how to use the legacy input system with UE5.1 and later projects: https://www.youtube.com/watch?v=Q0FSrNQozaE
My beginner’s C++ course on Udemy: https://www.udemy.com/course/beginners-cpp-bootcamp/