hello i live in poor location of the word which im not going to specify. But can i use pocket mine ??
Yes. PocketMine is free and open source project. Please refer to documentation for any further help, for example installation and configuration: RTFD
You need access to internet, and access to a 64-bit CPU, as well as reliable electricity supply. I don't think many poor locations of the world have all of these, but if you can send a message on this forum, you aren't living in a very poor location of this world.