https://github.com/mattermost-community/focalboard

Focalboard is a good alternative Sadly it doesn’t seem to be maintained at the moment.

For Personal To-Do List & Habit Tracker I use Habitica it’s pretty cool :)

Yea fuck Google I still use it to manage my subscriptions and playlists and the open the url in a browser with ublock origin until they fix it

For YouTube Desktop App there Is FreeTube. It’s great!

For drive: Filen https://filen.io/

E2EE & Open Source, from Germany IIRC