I’d like to know which one is creating /.Trash-1000. Yes, at the root folder. No, I don’t have any other OS installed in this system but linux

deleted by creator

Not sure if you know this but with Gmail (and I bet that almost with any other email service) you can approach this - instead of the ‘-’ character you use a ‘+’ and set custom filters and tags for each ‘+’ you want. I’ve been doing this for ages with it - though as a third world person I can’t afford privacy by paying a third party subscription nor setting a home server and running local services 24/7 by paying more electricity.