https://vlc-bluray.whoknowsmy.name/
Did not try but the library tyeg are mentioned ia in Debian and Ubuntu repos so you only need to download there the keysdb.
Installing libblueray2 library would also install libaacs0 library for this in Debian.
If it does not work: either the KEYSDB is outdated or the encryption of your blue ray is BD+ (libbdplus), which requires other library and other set of keys.
Please, to the people replying to this person and suggesting "just buy a new one".
Not everynyan has the money, and yes, even 30 dollars/euros/etc may be difficult to get for a person. Maybe low income, maybe no income, maybe inflation in the country, maybe that is not the real price in their zone, maybe no stores available easily.
I understand that some of you have those options but understand that is a privilege too.
edit: if you wanna still suggest that, I propose something better. If it is so cheap and accesible for you, why dont you buy it and give it to them for free?