Does your text look like this when you copy it? That's called markdown, it's a developer kinda formatting. Each symbol tells the system how to fromat the text to make it look organized.
Ok? So how do I fix it?
Well… you can't really in the application, HOWEVER, you can use this handy-dandy tool: https://www.docstomarkdown.pro/convert-markdown-to-google-docs-online/