I've started to use Joplin[1] and haven't looked back. It's open source and their business model is hosted cloud syncing. I already have a self-hosted Nextcloud instance running and WebDAV is supported for syncing as well so I'm not paying anything at the moment.

They also have apps on desktop and mobile. The apps may not have the most polished UI but they work extremely well.

[1] https://joplinapp.org/