Help - How to - From Mavericks to Sonoma - IMac late 2013

Hi everyone I’m trying to upgrade from Mavericks to Sonoma on my iMac late 2013, please someone can explain me the easiest way to upgrade then use oclp ? I tried the latest version but I need minimum Mac OS 10.10 to run it and my actual version is 10.9.5 I already did it some time ago on a MacBook Air 2015 and wasn’t stuck but this time it’s a pain…