As far as I've seen themeforest lacks good digital download templates but you can always try the followings -
(this can also be used to sell digital products as I've it for one of my client)
Tijarah | Digital Marketplace WooCommerce Theme
Tijarah – ultimate wordpress theme to build an online store or marketplace using woocommerce. Tijarah Theme allows you to create your own marketplaces such as Amazon, eBay, Etsy, Themeforest, or...
themeforest.net
Aabbe – Digital Marketplace Theme
- ElementsReady add-ons for elementor Stable and Optimised Version Available Update --------------------------------------- 30-January-2023 : Version: 6.0.0 ---------------------------...
themeforest.net
Cartzilla - Digital Marketplace & Grocery Store WordPress Theme
Cartzilla – Digital Marketplace & Grocery Store WordPress Theme Cartzilla is the ultimate WordPress theme for your Digital Marketplace & G...
themeforest.net
BookJunky - WooCommerce Book Store for WordPress
BookJunky is a WooCommerce book store for WordPress theme perfect for book stores, libraries, authors and publishers. It’s fully responsive and comes with pre-designed pages, Slider Revolution and ...
themeforest.net