Sources:

RuTracker - https://rutracker.org/forum/index.php

1337x - https://1337x.to/home/
Release groups: QxR, UTR.
Search: title QxR

Subdl - https://subdl.com/
Subtitles.

TorrentGalaxy - https://torrentgalaxy.mx/

RARBG dump - https://rarbg.reddiitserver.workers.dev/

YTS - https://yts.mx/
Last resort.

EZTV - https://eztvx.to/home
Series.

MVGroup - https://forums.mvgroup.org/
Documentaries. You need to register.

To play MKV, MP4 or AVI file install K-Lite Codec Pack Standart and open file with Media Player Classic.

Hotkeys for Media Player Classic:

Ctrl+L - to load subtitles. W - to turn off subtitles. F1, F2 - to move subtitles. Cltr+O - to load audio.

To rip DVD or Blu-Ray:

1) Get the disc. Buy it or rent it from local library.

2) Extract contents of the disk into MKV container with MakeMKV.

3) Compress MKV with HandBrake.

To rip from streaming services, look for pazu streaming service name on 1337x and BT4G.