@elenaElena Rossini on GoToSocial ⁂ Do you know ncdu? Its a terminal command that helps me to find the culprits on the server that steal my precious space. Pressing D then deletes (after confirmation).
@SaschaSascha Foerster 
thank you Sascha. I used to be stuff like that on my other VPS - which had a Ghost-CLI installation. With YunoHost I don't dare go in the backend to touch anything, lest I disrupt something. I have too many important apps in that installation. I'm not incurring in any extra costs... it's just that a social networking app caches media, avatars and emojis of everyone I follow. I found an old backup from December 2024 when I was only following one account and it was 256 MB! Pruning the list of people I follow - it overlaps with my Mastodon account - may be the way to go 😅
If you have a fediverse account, you can quote this note from your own instance. Search https://aseachange.com/users/elena/statuses/01KFDHMA5TKE5HY3YTYM6FKHZQ on your instance and quote it. (Note that quoting is not supported in Mastodon.)