I would like to ask you if it would be possible to install Cisco Webex successfully and how? Unfortunately I have seen that in Endless App Center there is no such application option, but they have released distribution (.deb) in their download’s page (https://www.webex.com/downloads.html)
Additionally if it would be possible to install and uninstall Lazarus IDE via the following commands for Ubuntu.
Finally if it would be possible to install R & Rstudio via the following tutorial for Ubuntu.
as for deb package , Endless OS is protected with Read-Only Filesystem , so i don’t think installing deb is possible with it, since it uses flatpak behind the scenes , you can read more from here https://support.endlessos.org/en/apps/flatpak