Delete files from WhatsApp without deleting files in Gallery

I'd like to delete some files on my Android device (Xiaomi) by deleting files stored by WhatsApp that I didn't save in my gallery. I have a few questions. 1) If I understand correctly, whenever I send a media by WhatsApp (being it a video recorded in the app or a video/picture already existing in my gallery) it creates a copy of the media in the following folder. Is it correct? Internal memory\Android\media\com.whatsapp\WhatsApp\Media\WhatsApp Video\Sent Internal memory\Android\media\com.whatsapp\WhatsApp\Media\WhatsApp Images\Sent 2) If I delete those media (even if they were originally in my gallery), will I delete them also from the gallery or only from that folder? 3) I see that in my gallery I have some media from Internal memory\Android\media\com.whatsapp\WhatsApp\Media\WhatsApp Video. These are the media I received by WhatsApp and I saved in my gallery (be default or explicitly). Is it correct? In this case, if I delete them, I would delete them also in my gallery (meaning I won't have them anymore on my device).