Make grub show up to rollback

Yesterday I did a system update and since then Bazzite only boots to the login screen. But after login KDE has a crash loop. I checked the documentation on how to roll back:
https://docs.bazzite.gg/Installing_and_Managing_Software/Updates_Rollbacks_and_Rebasing/rolling_back_system_updates/

This sends me to the grub menu or the console, but I cannot reach both. How can I make grub appear without access to the console?

Bazzite is a custom image built upon Fedora Atomic Desktops that brings the best of Linux gaming to all of your devices.

Solution

Actually, google did not help. Reddit did not hep. Le Chat did. Pressing ESC while booting did help.