I am going to be writing a vampire character(stupid, i know) who was born in the end of the 11th millennium BC/start of the 10th millennium bc i have read the wikipedia pages, but there is almost nothing there.
I am planning to become a Historian myself, by the way
If you’re looking for specifics, there isn’t a whole lot to know about life back then.
10,000 BCE is before written language, it’s before the domestication of virtually every animal except perhaps the dog, sheep, or goat. It would be at a time when agriculture was still in its infancy and no one was settled down practicing full time intensive cropping. The entire human population of the planet was maybe four million.
All of that makes a time period this far in the distant past very difficult to study in the same way you might study Ancient Greece, Ming China, or the Cold War. There was no one writing down their thoughts, feelings, or beliefs. People generally did not live in permanent settlements and therefor did not create a huge archeological footprint. Part of the fascination with archeological sites like Göbekli Tepe is their very singular nature— there just isn’t anything else like it.
If you want to study the time period, anthropology is probably more the track you will want to follow; specifically archeology or possibly biology/botany so ultimately you can study the ancient environment and further develop a picture of what the earth was like at that time to understand what sort of challenges people at that point were facing.
You might want to consider looking up anthropology works dealing with the issue of “primitive affluence.” This debate is perhaps a bit dated, but will help explain some of how anthropologists try to study/extrapolate what life may have been like before some societies turned toward settle agriculture. “The Original Affluent Society" by Marshall Sahlins may help open up the topic— or his large book “Stone Age Economics.” Though, please note, this body of work can not tell you exactly what life was like at 10,000 BCE, they are merely introductions into the debate over what life may have been like.