The second is watchable but is worse as an adaption.
The events in the first book are concluded in it. It's not a trilogy adaption of Dune the book. Many of the characters have their actions and motivations swapped onto other characters. The ending changes some significant points. Feels like the third movie might end up being a freestyle attempt to start a "Dune Universe" IP rather than caring about the source material.
It's kind of a mess but still fun in some bits. Not sure if I'll bother to watch the third when it comes out.
I've never seen a hard modern monitor. They do make hard plastic TV/monitor screen protectors. A nice movable mount, the handles suggested, and a screen protector might bring you close to the setup you need.