I move between DeGoogled phone and Linux laptop all day,. Nextcloud and associated apps are key. I even sync my browser bookmarks across all devices and all browsers using Nextcloud Bookmarks and the Floccus app. Not even Big Tech offers thar much synchronization. 

 This is something I will need to look in to, I just feel like it has a high barrier of entry with regards to time to learn. Currently running windows and iOS which I’m not happy with morally but work extremely well for my use