This web part provides you the ability to add a particular user’s personal calendar on a web page. The web part may be configured to automatically refresh, as well as display up to seven days of events and a pre-defined number of events at a time. This web part is powered by the Microsoft Graph and currently requires that the Office 365 tenant be configured for targeted release for all users.
Open this sample in the gallery (popup panel): Open in gallery
Source: https://github.com/pnp/sp-dev-fx-webparts/tree/main/samples/react-personal-calendar