right.
From your 25.0.13 you can directly go to 26.0.13 (always the latest minor version).
You can launch the updater from command line, for the last versions, this worked very reliable for me (in nextcloud folder php updater/updater.phar
), it does most things in the background for your but has no runtime limits like the web version and shows errors directly.
PHP 8.1 or 8.2 support all versions from NC 26 to NC 30:
Don’t forget a backup of the database and data before you run any update.