How can I download videos from this website? (nemzetiarchivum.hu)

[RetroC]

Hello, I'm trying to download some videos from this website but I just can't figure out how. I've tried many downloaders, yet nothing came up. I also tried recording the screen while on the videos but apparently the website just disables it and turns the recording into nothing but a black screen. The website in question is nemzetiarchivum.hu, a Hungarian site featuring many previously unavailable productions like series or movies in high quality. No, I am not Hungarian.
Here are the videos that I want to download:

Single episodes:
https://nemzetiarchivum.hu/m3/open?id=M3-b2JmVFNrRkFZbnNWT3N3eTFjOVBVeVBaaWkrVmRDZDZzcE40Zkk5WmdjRT0
https://nemzetiarchivum.hu/m3/open?id=M3-ekgrNWxxUkM4ekEwNVpQakwxeEEwM01XcWVZZWtNQmhYSzBIZ2RHNmpJTT0
https://nemzetiarchivum.hu/m3/open?id=M3-K3NkcFRPSmtrVUdXS1FPYi9DR1AvS2dTSWZueXpPTFJaRnd0WHUzWnlhWT0

Full series:
https://nemzetiarchivum.hu/m3/open?series=WsOpbsOz
https://nemzetiarchivum.hu/m3/open?series=UG9tLVBvbSBtZXPDqWkgSS4gc29yb3phdA%3D%3D
https://nemzetiarchivum.hu/m3/open?series=UG9tLVBvbSBtZXPDqWkgSUkuIHNvcm96YXQ%3D
https://nemzetiarchivum.hu/m3/open?series=VMO2Zi1Uw7ZmIGVsZWbDoW50IEkuIHNvcm96YXQ%3D
https://nemzetiarchivum.hu/m3/open?series=S2l2w6FuY3NpIEbDoW5jc2k=

[2nHxWW6GkN1l916N3ayz8HQoi]

This is just basic widevine. Use this browser addon to download them
https://forum.videohelp.com/threads/416316-[Release]-WidevineProxy2-Extension-Bypass-H...ng#post2754872

[RetroC]

I'm a complete dummy when coming to technology, the downloaders I tried to use are all very simple ones (like Atube Catcher or IDM) and I can't figure out how I should download my videos from this one. I know this may sound frivolous, but could you give me instructions on how to download these?

[2nHxWW6GkN1l916N3ayz8HQoi]

The instructions you want are found on that post I gave. You can't get anything simpler than that when it comes to DRM (at least as of now). If you have further questions, ask them there and you'll receive help.