How can I change the default file type to open in Writer?

When I click open on Writer the default file to open is “All files”. How can I change the default to “Text documents” so that I am not presented with all the files in the directory, pictures, AppImages etc which cannot be opened in Writer

Tidy up your directory, creating dedicated sub-directories: office, family, business, household, …

In addition to @ajlittoz :

How can I organize my files (exampel Windows 10)?