I was exploring Umbrel's app store as I want to play and experiment with various applications they have available, one of them is Datum which allows you to create your own block template as @Undisciplined suggested.

I need elp to fully understand what he meant frens. It makes sense you can make it harder for you to find the shares and then you are rewarded proportional to that difficulty when you find a nonce above that difficulty, but that narrows this to pools where miners are rewarded proportional to their hashrate.

I hope that's correct, if so good 🎉, in any case the second and most important part of my doubt is regarding CK pool which has a high difficulty port "for miners that require a high difficulty, such as mining rentals".

Why would anyone use that?

The more I know, I don't know 😅