Get files from subfolders containing specific name in collection

I have a folder which contains a lot of sub folders .
Within these sub folders i want to search for specific files name with a wildcard, and store those in a collection, for further use.
I now i can use get folder to collect all sub folders , but what objects/calculation can i use to select only the ones i want and search and find deeper?

Many thanks for your help !

You can use Filter Collection, to get only the desired Subfolders, then Loop every Sub Subfolder to find the next ones, and so on..

To filter just use the 'Filter Collection' action from Collection Manipulation with the following expression:
"ColumnName LIKE 'NameToFilter*' "