There actually is a "natural lubricant" the comes from the asshole. True degens know this lol. The anus does secrete a small amount of mucus/ discharge to help with bowel movements, when the ass gets fucked it it can cause it to come out in excess.
Also.."I wish her all the best" "I don't like that it looks painful for her" Yet you watch and get off to an absolute degen gooner girl who fucks herself for random guys on the internet, cognitive dissonance much? Psychical pain is probably nothing to her, if you care soo much about her "pain" stop watching her, tbh stop watching porn in general lol.
But ultimately naa keep it raw and lube free...Its way hotter.