Shameless plug, but check out my tool for managing OKRs outside of spreadsheets if this is something you're looking for https://simpleokr.com
My problem is less that no tools exist to manage things outside of spreadsheets, but more that older management tends to take the position of "Jira (or whatever) is complicated and I already know Excel, and I'm in charge so we're using whatever doesn't require me to learn something new".