You could only attach small Files here in the Forum. If you want to share a Video file you have to use a file sharing Service or Dropbox or Google drive or something like that und Post the Link to the file here.
Samsung Galaxy Tab S7 FE Android 12
Samsung Note Pro 12.2 LineageOS 14.1
Huawei Media Pad M3 lite Android 7
Samsung Note Pro 12.2 LineageOS 14.1
Huawei Media Pad M3 lite Android 7