The guide that is often recommended for Chromebook installs – Installing Anki on Chromebook (Linux) 2023 Updated Guide . However the install process has changed significantly since that was written, so you might need to start with a pre-25.07 version and get that working first. Releases · ankitects/anki · GitHub
If you can install Android apps on your Chromebook, you might have better luck with AnkiDroid instead – Anki - powerful, intelligent flashcards .