I try to understand understand how the pagination work on the fronted. I can't find any documentation about it. Can someone provide my a example how the pagination will work ? I have already look many time to the blog plugin but still dont understand it.

Of what? Forum, blog or another?

Check their specific documentation.

Blog plugin Forum plugin

I want to know how I can use pagination in my own plugin.

Their is no documentation for this, as their are not built-in. So make your own. I think that you can be inspired from the blog and forum plugins.

Ok thats fine :) I tought it was build in feature...

Thx!