Works in the UK (at least on a Google pixel) as well but not sure about other countries, is reliant on a Google account+Google services which are kinda privacy invasive
Could set up a nextcloud instance, but might be a bit overkill for your use case as it is a full Google workspace replacement
Antennapod is good
When it breaks + the replacement cost as much as the phone costs (I generally buy secondhand)
I would recommend proton drive as a great replacement if you want something that doesn’t need a server
The closest is nextcloud collectives, tables, tasks and deck
I personally like Nextcloud notes for quick notes and nextcloud collectives for detailed stuff e.g revision. With nextcloud tables and deck it makes a great notion replacement
Tasks.org, synced to nextcloud using webdav