Loss of 100s of punds of films, audiobooks and TV series not that Itunes does not support this in ITunes

Just up graded my computer to Catalina OS and have found that apple have denied me access to 100s of pounds worth of films audio books and tv shows I had on iTunes.

I can get my music but every thing else is gone and inaccessible and given that talk to apple customer support is problematic at the best of times, we have to wonder whether its worth suing Apple for the deliberate loss of this big library.

Anyone have any ideas as to why Apple as done this. and oh as fro the so called app for this that and the other they don't have one from what I can see.