It should be something similar to Settings-Sounds and Vibration-Ringtone.
Try turning your phone Off and On to reset it.
Current Phone ~
Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+
Samsung One Ui 3.1/ Android 11.
Thank you for your answer.
Actually, I try but it does not work.
I did a full reset of the S7 two days ago and it worked normally, but I have again the same problem.
When I go into the vibration menu, I have the normal options,, when I go to the Ringtone menu, I have something like the explorer menu...