You can delete only for a short period after you post. You can edit a post for a bit longer - then it becomes fixed.
If there is a really good reason it has to be deleted - or you think something should be changed - hit the notify button and a moderator may do what you suggest/request.
The further you are down the pay scale, the more 'essential' you are when the s--- hits the fan... Sue Farbysmith 2020
Insults are engendered from vulgar minds, like toadstools from a dunghill - Charles Caleb Colton
We don't do charity in Germany, We pay taxes. Charity is a failure of governments' responsibilities - Henning Wehn