@Tebtim
You mean a "Me Experience"?
You kind of have one here: "https://portal.office.com"
If that is not enought then take a look at this article from Microsoft Learn.
https://learn.microsoft.com/en-us/sharepoint/dev/spfx/build-for-teams-me-experience
They are building a "Me Experience" for teams by creating some SPFX Webparts, building a SharePoint Page with the webparts and embedding that page into teams.....
But you can skip the last part, if you don't need the teams integration.
You get all the webparts you need by installing the sp-starter-kit from PnP
https://github.com/pnp/sp-starter-kit
It includes many useful webparts for this usecase like
Personal Email
https://github.com/pnp/sp-starter-kit/blob/master/documentation/components/wp-personal-email.md
Personal Calendar:
https://github.com/pnp/sp-starter-kit/blob/master/documentation/components/wp-personal-calendar.md
Personal Tasks
https://github.com/pnp/sp-starter-kit/blob/master/documentation/components/wp-personal-tasks.md
Recently used Documents
https://github.com/pnp/sp-starter-kit/blob/master/documentation/components/wp-recently-used-documents.md
Best Regards,
Sven
