Plugins that disappeared when upgrading SonarQube versions

I upgraded SonarQube from version 7.6 to version 9.9.8.
I don’t see the plugins that were installed by default.

Do I need to find and install another plugin or is this just an addition to the default functionality?

List of plugins that were installed in version 7.6:
qualinsight-sonarqube-smell-plugin-4.0.0
sonar-auth-github-plugin-1.5.0.870
sonar-auth-saml-plugin-1.1.0.181
sonar-csharp-plugin-7.10.0.7896
sonar-css-plugin-1.0.3.724
sonar-cxx-plugin-1.3.0.1746
sonar-flex-plugin-2.4.0.1222
sonar-go-plugin-1.1.0.1612
sonar-html-plugin-3.1.0.1615
sonar-jacoco-plugin-1.0.1.143
sonar-java-plugin-5.10.1.16922
sonar-javascript-plugin-5.0.0.6962
sonar-kotlin-plugin-1.4.0.155
sonar-l10n-ko-plugin-1.6.0
sonar-ldap-plugin-2.2.0.608
sonar-php-plugin-2.16.0.4355
sonar-pmd-plugin-3.2.1
sonar-python-plugin-1.11.0.2473
sonar-rci-plugin-1.0.1
sonar-ruby-plugin-1.4.0.155
sonar-scala-plugin-1.4.0.155
sonar-scm-git-plugin-1.7.0.1491
sonar-scm-svn-plugin-1.9.0.1295
sonar-stash-plugin-1.6.0
sonar-typescript-plugin-1.9.0.3766
sonar-vbnet-plugin-7.10.0.7896
sonar-xml-plugin-2.0.1.2020

List of additional plugins installed after updating to version 9.9.8:
qualinsight-sonarqube-smell-plugin-4.0.0
sonar-cxx-plugin
sonar-l10n-en-plugin
sonar-pmd-plugin
sonar-rci-plugin
sonar-stash-plugin-1.6.0 (noticed deprecated starting with 7.7)

Hello @yoonbeen

9.9.8 is already outdated, you should update to 2025 LTA or the latest 2025 build.

The scanners from SonarSource are bunded already for several years with the SonarQube Server, thus you don’t have the possibility to update them separately. Since then they are also not shown in the plugin list, only 3rd party plugins are still there. I think, this started with the 9.x series, which would match your observation. Therefore, it should work even without the plugins.
Some plugins are also replaced by other possibilities, e.g. LDAP is now integrated in the Administration tab of the UI.

Since then you have to opt-in that SQ is not responsible and manually install them in the commercial editions.