The www.skijumpinghills.com link you put is the same, as my, but in English, I used the German version :)

Even I do not know exactly the place of Szabadsághegyi jump, but it must be near there, where the map shows, I suppose (Jánoshegy nowadays).

Not easy to find anyone, who knows something about Hungarian ski jumps, but will try.

As the site shows with photos http://www.skisprungschanzen.com/DE/Schanzen/HUN-Ungarn/P%C3%A9cs/1494/

Pécs has also some "ruins" of the former ski jump.

 

About Lillafüred I found another article: http://eszaktour.blog.hu/2017/09/25/10_dolog_amit_valoszinuleg_nem_tudsz_lillafuredrol

It says, that

"Bükkszentkereszt felé, a libegő felső állomásától délre található a műugrósánc maradványai".

This means, that direction Bükkszentkereszt south of the upper station of the lift (libegő) there are the ruins of the ski jump.

 

In this topic there is an other interesting post: "Bár kerítésen kívül, de a Normafánál a Vasas síház mögött ott a két kicsi kősánc (jó renoválandó, da a terep nem nagyon változott)."

It means: 2 other small jump hill ruins can be found at Normafa (Budapest) behind the Vasas Skihouse.