Java isn’t JavaScript in the same way that Ham isn’t a Hamster.

Nextcloud is decent but it depends on what you want. Personally, I’d never use it again due to performance reasons but it’s a decent platform for cloud editing and stuff.

I switched to Syncthing for file management across my devices. With it, I can sync my Joplin notes. It’s all I need in life. It was also easier to set up than a Nextcloud instance.