can I go past what it says I can use in os

Greylegs wrote:

hi I got and iMac (21.5-inch, Mid 2011) its using high sierra os . but it won't work with my bank and Microsoft word and pdf viewer . how can I get a newer os

You can’t. That machine is not capable of running anything later than high sierra.

Not on that model.

(229901)

Mostly you just need a more modern Browser than Safari on High Sierra like Firefox or Brave.

https://brave.com/