Yes that structure is good and the data format is nearly right but when passing data to the next level from 1 to 2 you need to be sending or searching in THIS TEXT not the fixtures list.
I don’t think that “bubble” doesn’t like anything, Regex should be Regex.
If the first workflow split the text on bar, and your week numbers made their way to the end, then the second workflow should have no problem splitting it on comma.
Try these fixes
Richard