Easily download all the images from any subreddit (also select sort_type if you want hot/top/new/controversial, and also sort_time day/week/month/year/all). Randomly select downloaded images and set as wallpaper, updating every 30 mins (or whenever you want duh)!
Why do you think that https://github.com/Fitzy1293/redditsfinder is a good alternative to WallpapersFromReddit