Help Scraping alphabetical sorted pages

Hi, I want to scrape the data from here:
https://thimfilm.at/Katalog - but from the individual film sites (i.e. https://thimfilm.at/filmdetail/i-tonya), which are reached through an alphabetical order. The change of the letters is not shown in the url, and I can't find the correct option to browse through all the letters. I already tried links, html, element attribute,...

Any tipps?

Thans a lot!
Best regards,
Michael