The Dutch media archive Stichting Beeld en Geluid has released its full catalog of 100 years' worth of media (radio and television) that was produced in the Netherlands.

I'm not sure if this accessable but the name, "schatkamer" or treasure trove, is more than fitting!

https://schatkamer.beeldengeluid.nl/serie/210160803002570423...
Open Stream 2 for the news item about FZ'performance in Netherlands in 1980.

https://schatkamer.beeldengeluid.nl/serie/210160803002163283...
Shows Yellow Shark footage 47 minutes in.

https://schatkamer.beeldengeluid.nl/serie/210160803002167503...
News from Dec 6th 1993. FZ about 6 minutes in.

Kiers's FZ doc that raised questions in parliament:
https://schatkamer.beeldengeluid.nl/serie/210160803002166033...

https://schatkamer.beeldengeluid.nl/serie/210160803002150713...
Actuality magazine NOVA on FZ, around 11:30 FZ starts

https://schatkamer.beeldengeluid.nl/programma/21016080500371...
The 200 Motels documentary

https://schatkamer.beeldengeluid.nl/programma/21016080800686...
Interview with FZ on the Holland Festival debacle.

https://schatkamer.beeldengeluid.nl/serie/210160803002182673...
Concert footage and interview starts 10 mins in