[windowsrookie]

MacOS up to version 13 runs well using OpenCore even on my 2010 iMac (I did upgrade it with a metal compatible GPU).

Looks like the only issue with your MacBook Air is there may be some metal issues. https://github.com/dortania/OpenCore-Legacy-Patcher/issues/1...

If those don't look like a problem for you, I'd definitely suggest giving it a try. MacOS 13 should give you at least 3 more years of use out of it.

Going beyond MacOS 13 I don't think is worth it. MacOS 14 is noticeably slower on my 2010 iMac, and there aren't any new features it can take advantage of anyways.

[kome]

that's a very useful comment, thank you for sharing you experience with older hardware!