I'm going to go into a lot of detail but I hope I explain it well enough.
A video file has these three main things you should look for to make sure it can be played on your TV.
1) video codec
(examples: h264, h265, x264, etc..) Sometimes these also go by other names such as h264/x264 or h265/x265/hevc. Usually this is in the file name (like the examples you gave) or torrent description.
2) audio codec
(examples: AAC, AC3, OPUS, MP3, etc..) Usually this is in the file name (like the examples you gave) or torrent description.
(examples: .mp4, .mkv, .avi, etc..) You can look at the file extension of the video and know which container.
Based on the examples you gave it seems like your TV doesn't support x265/HEVC/h265 and some audio codecs. One of the examples you gave had "DD5.1" audio codec but was x264 for the video codec. DD5.1 is Dolby Digital 5.1 and your TV doesn't seem to support that. It would help if you told me the make and model of your TV or you could try going to their website and seeing what video/audio formats it supports.
x265/HEVC/h265 is the various names for a video codec and your TV doesn't seem to support it. OR it could be that the h265 videos you have are in the MKV container and it doesn't support that but it would play if in a MP4 container. Again, I don't know depends on your TV.
Here's what you can do.
1) Connect your computer to the TV and play the video from your computer.
(This is what I do if I want to play something on my TV. I don't know how far away your desktop is from the TV or if you have a laptop, but I would just connect your computer to the TV and play the video that way. Your TV and computer (probably) support DP/display port or HDMI. If you aren't sure, google pictures of display port and HDMI and look at your TV and computer.)
2) Only download videos that are playable on your TV.
(Some content might only be in a codec/container your TV doesn't support.) MP4 container with h264 video and AAC audio is basically guaranteed to work with almost any TV but not everything uses all three of those. Lookup what your TV supports.)
3) Encode/convert the video to a format playable on your TV using something like Handbrake.
(Not recommended. Time consuming and more difficult. https://handbrake.fr/docs/en/latest/
About containers, video/audio codecs