This is a very basic R package for fetching Reddit data using the pushshift API. At present, the package should suit general users, but is not a general package.
devtools::install_github("https://github.com/nathancunn/pushshiftR")
To get top-level posts from /r/soccer from January 1st 2019:
getPushshiftData(postType = "comment",
size = 1000,
after = "1546300800",
subreddit = "soccer",
nest_level = 1)
This package is basically an R implementation of the code here and uses the pushshift API to download Reddit data. If you use this, you might consider donating to them.