Roosterteeth removed most episodes from Youtube some months ago and the videos on their website have so much ads that they ruin everything. I have tried looking for it, but most pirate sites that I know of either don’t have it at all, don’t work, or don’t have captions.
Are you able to inspect element and find the .mp4 file somehow? Try the add-on Absolute Right Click and Copy to inspect the video player.
I tried slapping it into my MeTube UI that uses yt-dlp but it doesn’t support Rooster Teeth I guess.