[Django]-Why Form is not saving the many to many field value

Since you are saving the form with commit=False, you must call the form’s save_m2m method after saving the instance.

new_profile = form.save(commit=False)
# no need to fetch the user here, just use request.user
new_profile.user = request.user
new_profile.save()
form.save_m2m()

See the docs on the model form save method for more info.