Where to download predefined dashboard?

I have installed ELK stack but don't see any predefined dashboard.

Is there any place where I can just download only these dashboard?

Thanks!

There are no default dashboards for the entire stack, but there are default dashboards that can be installed with particular tools. The easiest to try is the sample data in Kibana, which comes with dashboards. Each beat also comes with dashboards, such as Filebeat: https://www.elastic.co/products/beats/filebeat