This is the heart of your search. Oblivion was never ported to macOS. However, version runs beautifully via Wine-based wrappers. Here are three proven methods.
While newer versions of Requiem exist, version 3.3.5 holds a special place for many users because it is the final release that supports iBooks decryption Requiem 3.3.5 -Mac Windows and Source Code-
: To get Requiem running on Windows, you will need to have the Java Runtime Environment This is the heart of your search
Have you successfully run Requiem 3.3.5 on an Apple Silicon Mac? Or have you compiled a custom patch from the source code? Share your experiences on the r/RequiemMod subreddit. Requiem 3.3.5 -Mac Windows and Source Code-