I kept running into issues or limitations with Google cloud services. Features would be disabled, or I was after specific functionality that was not provided. I looked into self-hosted solutions, and found out about services like Nextcloud. It snowballed pretty quickly from there.
The whole idea is to move all personal data away from Google’s vast cloud. I can now host my data on my own server. The majority of this revolves around Nextcloud, which synchronises all my files, calendar & contacts between devices (desktop, laptop and mobile phone) as well as being able to access all of this online.