Although Roon will keep all kind of albums (singles, EP’s, Main albums) in 1 Library, I believe it is rather easy to achieve what you want.
DISCLAIMER: I am not subscribed to Tidal, so maybe I do not see the whole picture here.
If it is really about ‘Singles’ and ‘Main Albums’ (and eventually EP’s), Roon has already precluded a Focus view on these different types of albums. Please note, this information is coming from the streaming service provider.
In my case, there are only 3 ‘Singles’ in My Library
and 14 'EP’s
You can make an permanent view on this by defining Bookmarks. You only have to do this once.
If you later on add a ‘Single’ to your Mibrary, it will automatically appear in your Bookmark view.
As an example, let’s do it for Singles
So Focus on Singles
Click somewhere on a white space on your screen in order to remove the Focus menu.
Click on the Bookmark symbol on top of the screen
Click on ‘Add Bookmark’
Give the bookmark a name, in this example, I called it Singles, and click Save
Click Reset to remove ‘Single’ focus, and go back to your Album browser
Now if you want to see your Singles, just click on the Bookmark symbol on top of the screen again,
select the Singles bookmark and there you go: you will only see your singles.
Every Single (i.e. album of the type ‘Single’) that is added to your Library later is automatically added to this Bookmark (and thus View).
You can repeat this for other types of Albums - EP’s, Main , if you want.
You can take it 1 step further from here if you want.
Suppose you rip a ‘Single’ or you just want to select 1 track of an album as a Single.
Feasible as well, but it needs some effort from your side for each ‘Single’.
Let’s make a Single from a Main Album track. Angie from The Rolling Stones.
The album containing Angie is ‘Goats Head Soup’
If the album is available as a local (ripped or download) album in your Library,
click Versions to select a Version from your streaming service (in my case Qobuz only)
Select the Qobuz(/Tidal) album version with the track you want.
Click on the 3 vertical dots at the right of the selected track
Click on Add To Library
You have now an album with 1 track.
Click on the 3 vertical dots near the Album Title and click on Edit
and click on Edit Album
Change the Album title to ‘Angie’
Scroll down till you see Album Type, and change to Single, then click Save
If you now click on the bookmark symbol again, and select the Singles bookmark, you will see that the Single Angie is added to your 'Singles library (as a matter of speak).
So a lot of work, but it can be done. if you really want it.
Hoipe this helps you