Why do you think agriculture started only before 10000 years ago ? why not before 50000 years ago.
Why human before 10000 years started to have skills and using tools.
That too was likely a slow process of various advancements binding together, similarly to the invention of black and white pictures to colored, HD full-length movies.
The invention of one thing leads to the invention of another, and both inventions will lead to yet another invention, etc. etc. Another example would be looking at how the agricultural revolution lead up to the industrial revolution, the industrial revolution didn't just one day show up, it was built upon decades and decades of advancement.
In the same way, humans didn't just one day begin creating useful tools; originally tools weren't even invented, people used the things around them in different ways. So way back when, a random rock on the ground could've been used like a hammer. These natural tools led to artificial tools, nothing advanced, nothing too far better. Gradually more artificial tools were made and were used to make more artificial tools, so on and so forth.
Skills and ideas came from traits held by individuals; some were clever and created tools to enhance these traits, some were athletic and used those tools like a pro, etc. etc.
If that makes sense