There is a problem that occurs when "Animation Type" is "Generic".

Set it up as shown in the picture, and when applied, under Preview, The "walking" animation is kept in the "T pose" state It is not working. Also, animation does not apply to "Hierarchy". The animation "Walking" was taken from the "Mixamo site" and "Walking" has the "In Place" option (animation works in place). However, in "Inspector", change the setting of "Rig" to "Humanoid" If i change "Source" to a proper "Avatar", it will work fine. From the facts above, i can guess that there is only "Humanoid" for the "inplace" option (animation works in place). Did I guess correctly?