I use Resilio to duplicate locally to my Unraid, which I know is hated as it's not the FOSS Syncthing, but in 5 years of use, it's never gone wrong, and the client software is dead easy to use. That has a hidden .sync folder which archives deleted files for 30 days. You can change the timeframe or remove this feature in settings. I go into the sync folder and remove the deleted files manually if it becomes too bloated.
From my Unraid, I then backup to Hetzner using Duplicacy, which with the GUI is also very easy to use. From what I've read about the other backup solutions being a bit flaky, Duplicacy seems to have nothing but love.