Unfortunately none of those browsers have a working Widevine extension available for them yet, which is the DRM that Netflix needs to work. A few years back Netflix worked in Waydroid for me, but with changes made by them to their app this is no longer the case.
There was an attempt by Marius to make a UT native Widevine extension, which you can download from the Open Store at https://open-store.io/app/widenabler.mariogrip - but in my tests this doesn't work for Netflix.
Some other potential fixes for this issue can be found at
https://github.com/AsahiLinux/widevine-installer
https://ftp-master.debian.org/new/widevine-installer_0.0~git20240811.eab8c66-1.html
https://codeberg.org/mogwai/widevine
but all these possible fixes would need a maintainer to port it to UT first, and they might not necessarily fix the issue for it.
Best regards,
Steve Berson