Hi.
I am uncertain I understand exactly what you're asking. I'm unsure if you're asking how to see only the tasks you're assigned to which are waiting on other tasks, or perhaps not waiting on other tasks. If you can elaborate on that, it'll help us.
With that said, I'd like to point out the app called: "My Test Cases" , you can find it in the App Catalog. In that app you can see the tasks assigned to you, the Work Product (US or DE) it belongs to. You can also further filter based on defect status, based on specific work products.
Hopefully you can find a way to get what you're asking within this app. If not, please reply to us and elaborate a little bit more on what you're trying to do, perhaps include one/two screen shots showing your current results so that we better understand what's not achieved.
If you wanted to give this app a try, you can find it in App Catalog, simply search "My Test Cases", then click Add and it'll add it to your dashboard:
In this screen shot I'm including a filter based on 'Defect Status'. Again, I'm uncertain it's relevant for your question, hopefully it is, try to explore it a little bit more and let us know.
Thanks,
Sagi