Three steps to your dashboard.

1. Create an accountGoogle, or an email address and a password.
2. Connect StravaOne approval screen. Your history imports on its own.
3. Read the analysisTen tabs of it, refreshed every twenty minutes.

Strava is all you need. Garmin recovery data is not available to connect — it has no grant flow, only an account password, and this site will not ask you for that. Full explanation.