Re: “So there's really no way to delete an application I don't want to use, in the machine I purchased? Really? An application that is not essential, like...chess??”
Ever since Big Sur, Apple has been hardening macOS against malware attack by putting many “read-only” system files into a cryptographically-signed sealed system volume. The Mac doesn’t even run off it directly, but off read-only APFS snapshots created at startup time.
Most of the applications that come with macOS - the ones that don’t take up much space on the drive - live on this volume. Thus you cannot delete them or update them separately from macOS.
A handful of large applications - Pages, Numbers, KeyNote, iMovie, GarageBand - are separately downloadable from the App Store. Those, I believe you could delete.