There are lots of free add-ons for WordPress Download Manager for you to explore.
WordPress Contact Form Builder
Ultimate Solution For Building Any Form. Try this even if you are already using another plugin. I’m sure, you will thank me for this later!
WP-Download Google Drive Explorer
Google Drive Explorer Add-on helps you to connect with Google Drive, you can explore your Google drive files, upload files to Google Drive and attach them with your package. You can control your Google drive directly from your site admin panel, use free 15 GB space and save your bandwidth.
Gutenberg Blocks and Page Layouts
Create Pages in a fast and easy way. Attire Blocks makes building pages and posts easier than ever with beautifully designed Gutenberg blocks and page layouts.
WPDM Extended Short-codes add-on will give you better experience in using WordPress
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