On your desktop please try Freetube.
You can also import your NewPipe backup (history and subscriptions)
Freetube will also allow you to have different profiles, that you could use one per device and regularly import their backups.
I do have Freetube but I forget to use it. I developed the instinct of reaching to my phone or to my tablet when I want to watch a video. The only source of videos on my desktop would be technical stuff embedded in pages from HN but videos are too long (as in time) compared to text so either I read the transcript if available or I skip to the next interesting post.
NewPipe doesn't need an account. I can subscribe to channels, bookmark videos and save them to playlists. It's all I need.
Not having an account has the disadvantage that I don't have a common list of videos across my devices. I could export and import but it's too inconvenient. I just share videos to the other device if I have to, via KDE Connect.