Hello, i have task to install a system for elderly person without much technical knowlegde (never used pc, no windows or mac).

They need text processing, calculator and maybe spreadsheet.

Want to disable anything else (setting panel, file browser, web browser, launcher, dock, terminal, login select, etc.) that not needed, all important thing only from desktop. Should not be able to go anywhere where not know what to do. But not permanent, might need to fix machine if ever break.

Is there distro or config i can work off? Or need to start from scratch? What program you recommend?

Thank you for any answer or recommendation