Ironically - after many years as a premium user - I have let my premium subscription run out. Like the previous poster, I have moved to the open source Joplin (https://joplinapp.org/).
To sync between computers and android phones and tablets I use https://syncthing.net/. I have a raspberry pi with an usb running syncthing 24h so i can always sync whatever machine I'm using, wherever I am, without relying on a cloud provider and worrying about privacy.