Profile? Quality?

Don’t know how to ask the question so I will present it as a problem. I just want to download the series Halo. Right now if I go to 1337x I see available downloads with names like: Halo.S01E06.1080p.WEB.H264-CAKES[TGx]
There are others but thats the type I want, 1080p.x264. In Sonarr I have Halo setup HD-1080p. Why does it not download this type?
How do I make a Profile? Quality? of 1080p.WEB.H264 so it will download that type of file?

If you manually search for the episode, does it find it? If so, what is the rejection reason listed? That will typically give you a good starting point on what you need to fix.

That aside, in answer to your questions, read from here. It explains how to do what you are asking:
https://wiki.servarr.com/sonarr/settings#profiles