I'm somehow in a similar yet completely different boat from you. My feed under all is made up of like 5 communities - memes, lemmy memes, 196, linux memes, and programmer humor - with guest appearances by politics and technology. Regardless of what I set the filter on my feed to, I have yet to see a single piece of porn crop up; and I had to specifically find a search tool on my pc to find some communities to subscribe to like an r/foodporn equivalent just so I would at least have some stuff pop up on my phone with some more variety related to my interests.

This is probably all related to Lemmy being new and not knowing how to get the most out of the app I'm using (and that being new as well), but as of right now I'm largely using Lemmy the way I used to use Twitter X or something rather than how I used to use Reddit. As a time waster rather than a place where I got invested in the communities I interacted with.