copy files and folders from cluster to desktop using PuTTY

Question

I would like to copy files and subfolders from a cluster that runs pacman to a Windows desktop computer using PuTTY.

1. First I would like to copy one specific file or subfolder as a test, for example my_test_file.r or my_test_folder, from the cluster to my desktop.

2. Then I would like to copy every file or subfolder that contains a specific word, for example mykeyword, from the cluster to my desktop. Note that mykeyword can appear anywhere in the name of the file or in the name of the subfolder, not just at the beginning of the name.

3. Then I would like to copy every file containing mykeyword from my desktop to a specific folder on the cluster

I know this is a very basic question, but I cannot find the answer using Google. Until now I have always used FileZilla to copy files and folders to and from the cluster. Unfortunately after I installed the latest version of FileZilla I am having trouble connecting to the cluster with it. I can still connect with PuTTY and want to copy files and folders that way if possible between the desktop and the cluster.

My question might be a duplicate of this question:

Copying files using PuTTy (not PSCP or anything else, just PuTTy)

However, that question has no answer and I do not understand the comment.

Thank you for any assistance.