SP 2019 On-Premise | Apply template to document library | Issue

Hello,

I'm using SharePoint 2019 Server On-Premise.

Task 1: Create a template of an existing document library.

Task 2: Apply the newly created template to a new document library.

Task 1 was successful but I'm failing to succeed with Task 2. I simply do not find the option to use an existing template. For clarification, I do not want to use a document template but a template for the document library, so the columns are copied to the new document library including the column formatting.

I would appreciate pointers.

Thank you and all the best,

VarDumped