Efficiently splitting firewood from tree rounds just requires some know-how and a bit of self control. And a splitting maul. Don't use your hands.
Fiskars Splitting Maul: https://amzn.to/41wNrzn
I try to post videos of homesteading/farmsteading things that I've learned over the years, especially when I haven't seen any other homesteaders post videos similar to what I'm doing. If you have specific requests, let me know.