Can someone tells me if there is a link where to download ltm postman collection ?
Or how to do mine ?
A complete collection doesn't exist, but all the F5 components are API-based, so you can explore the rest interface to see the path that you can call in postman and create your own calls and collection, follow this guide to interact with the rest interface:
For example, I create my own collections for deploying IPSEC, DNS, or some configurations that are not present in the base collection.
hope it works.