I’ve recently installed karakeep (previously hoarder) for collecting images and idea boards. I haven’t had time to play around with it so much can’t say what it’s like, but it came up a lot in other discussions of Pinterest alternatives. Also, you need to o selfhost, but if you want something free and not funded by ads, that’s pretty much a given.
Tbh, I also don’t know if it’s FOSS, but it is free to use and if you self host you can control its access.
I wonder if its the age of people you’re interacting with now, as you’ve gotten older yourself? My first degree was in philosophy, and I still read and discuss the subject when I get the chance. In my 20s lots of peers were curious or genuinely interested, and even if they were dismissive, it was often “what’s the point of that?” and could get the interested if I started explaining a classic problem or thought experiment.
Older people however, were generally more disparaging and would openly scoff with “why would we need philosophy!” often followed by “[Science | religion | real life] tells us everything we need to know” depending on their particuar worldview.
At the time I just thought that was what that generation was like, but now I’m in my 40s and I feel like many peers are getting more and more like that. I can only speculate that middle-aged people are less curious and openminded, they’ve come to terms with the world as they see it and they’re interested in getting on with things, not questioning the nature of epistemology or whatever. But the irony is that almost all the major problems that occupy so much of our time as a culture have massive philosophical aspects to them.