We do not recommend installing apps in Nextcloud unless absolutely required. Maintaining such systems is a security hassle since you need to keep them up-to-date. Apps often break when Nextcloud is updated and you have to know how to fix them. Finally, Nextcloud apps are not run sandboxed. This means that a faulty plugin might compromise the whole app and also not make the app work at all. Nextcloud apps also write into the same database as the main application which might result in unintended data corruption.

For the above reason, extensive use of Nextcloud plugins is highly discouraged since it will eventually break your install.