Importing Assets from BGL Files

Hello
I tried to convert a BGL File (from Microsoft Flight Simulator) to another file which UE5 accepts. But whenever i try to insert it into UE, all the inserted Materials are blank white or non existent.. All the files in the original format are DDS Files, which also can’t be included automatically. How can i include these DDS Files?
Do i need to convert them to png and inculde them via hand to each 3d Asset? Is there a way to auto include them into there specific location?
Can anyone help?