This is from the community on Reddit. You should be able to grab the torrent file for whichever 5e book you want from there. I would also recommend 5e . tools like the other commenters, even as just a separate reference; as a DM I’ve found it way easier to pull things up quickly, even if I legally own the book that has whatever spell/mob I’m looking for haha.
Search for The Amber Room in tg, it's basically a new Trove.
spoiler
(Don't forget to join the group, not the channel, since that's where all the shady things happen, and of course there are many other groups with exclusive content)