Downloading Pokemon insurgence on Mac Monterey

I really want to play Pokemon Insurgence on my Mac M1 Monterey. I know that the pages says that versions after Catalina aren’t supported, but I was wondering if there was a workaround. Whenever I run the installation command it gets to step 8 and then says: line 46 bad CPU type in executable. If there’s anyone kind enough to give me some tips or walk me through it, then I’d really appreciate it. I have very little technical knowledge.

https://p-insurgence.com/macos/

I tried running the code in the terminal, but it got to step 8 and said bad cpu type in executable. Is there some way to fix that? Or would updating my Mac help?