This should work for all the type of files.
<a href="https://www.exzample.com/wp-content/uploads/file.pdf">Click here</a>
Click here
And if you want to click the image to download a file:
<a href="https://www.exzample.com/wp-content/uploads/file.pdf"><img src="The URL of the image">Click here</a>
Hope it helps.
