Is There a Way To Disable the Caps Lock Key Across All Applications?

I am a senior. I have this ongoing issue of my left hand hitting the caps lock key. In OS 9 days there was an “app” that disabled the key. Can one disable the caps lock key across all applications?. I try not to look at the screen when I am typing so I can end up writing a letter (email whatever) in all caps. How can I disable the caps lock key?
Ed
As I indicated above I try and not look at the screen so at times I can write an entire email in caps and when I do it takes a long time to retype the letter changing it to lower case.
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Ed