Lost my Snowball warriors skin pack and Minecraft Founder’s cape

I lost my Snowball Warriors skin pack on December 30 from the 2 years ago 12 days of Christmas and same as for the Minecraft Founder’s cape. They were both limited so I can’t redownload them...
I found the skin and cape skin from the files app. I have the files and documents app. Is there a way to bring them back using the files app?
The picture down there shows that I can’t activate my cape and I don’t have the skin pack. Please help me. I really want them back.