Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:mike-fabian/openSUSE_Tumbleweed/home:mike-fabian.repo
zypper refresh
zypper install ibus-typing-booster
Для 15.5 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:mike-fabian/15.5/home:mike-fabian.repo
zypper refresh
zypper install ibus-typing-booster
Для 15.4 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:mike-fabian/15.4/home:mike-fabian.repo
zypper refresh
zypper install ibus-typing-booster