iMac (27-inch, mid 2010) - macOS High Sierra 10.13.6 - Upgrade or just install OpenCore?

Good afternoon, guys, how are you? I apologize in advance for my ignorance in the Mac world and computing itself.

I bought an iMac from an acquaintance, as I didn't have a computer and I currently use it for editing images in Capcut online, watching YouTube, Canva and browsing the internet.

I would like to be able to use it in the best way, whether editing videos and images using Adobe programs such as AfterEffects, Illustrator, Photoshop and others.

Memory 12GB Installed. Storage Macintosh HD 2TB SATA Disk

Can I install OpenCore directly or do I need an upgrade? Would the last one be Monterey?

I really like it, especially for the size of the screen and I would like to continue making the most of it.

Below are photos of the iMac configurations.

https://ibb.co/m6XGLkf https://ibb.co/bRRWZTK https://ibb.co/4WnM8VW

Thanks in advance!