How do I make a cloak in Minecraft?

Hi, I ever got a cape at some event? But a few minutes later the entry on Google was gone, so I'm not sure if it's true. I've heard other things, but somehow I even know what is meant…

In advance thanks

You need a client. For example labymod or badlion client. There you can buy the capes

Are there capes for free? (aslo legal)

No

Depends on. Do you play in Java or Bedrock? In Java this is only possible with Optifine, and that costs money. In the Bedrock you can't create it yourself, you have to buy a skin package in the Marketplace.

I'm not allowed to spend anything on the Internet but thank you anyway