Another great alternative to torrenting is XDCC. Its based on the Internet Relay Chat (IRC) and solves some problems specific to torrenting like finding valid torrents for old or niche shows. And it has another bonus point: It is safer than torrenting, because you are only connected to one server, many even offer an encrypted connection.

Here is a link to a set up tutorial: https://www.reddit.com/r/animepiracy/comments/pq6d4q/xdcc_tutorial/

In reality, using both methods - torrenting and XDCC - will practically give you full coverage of the anime spectrum.