I visited the first link you posted & without launching playback, this is what I got:
I was not even using a VPN. I launched the download of that variant:
Here's the results I got:
What you can't see, because the Properties applet obscures it, is the Date created attribute. You need to see that plus the Date modified attribute in order to calculate the download time. It happened to be 1 minute, which works out to an average of about 2 million bytes per second download speed, quite decent.
I opened the file in VLC:
It played fine, with both video & audio from beginning to end. I didn't sit & watch it, just skimmed through it to make sure it was all there. It did seem to be. It included all the opening & closing credits.
It struck me that since I don't understand the language being spoken -- I'm assuming it's Thai -- that I might like to have English subtitles if I were actually interested in watching this. I did note that there were a few passages that did have subtitles, I assume in Thai as well, so certain of these characters were speaking some other language or languages, which is interesting. In any case, I tried looking for a manifest:

If you look closely in that image, you can see that I eventually did launch playback of the TV program. I managed to improve the resolution to 1920x1080. Also, English captions somehow came on. I didn't click any buttons to get those so the site must have detected my location & turned them on for me. Convenient.
I wasn't having much luck finding a manifest but I did find several entries for SRT captions. I found subtitles in Spanish, Italian, Korean, Japanese, Chinese, & English. I'm guessing at those because among those, I speak only English. (Revise that. On later inspection, I discovered that there were no Japanese captions, rather 2 types of Chinese captions. Also, what I thought was Italian was actually Portuguese. Doesn't change the fact that I don't speak any of those other languages. I would have recognized French but they apparently didn't think of offering those.) I downloaded each subtitle file (that's how I guessed what languages they were) by simply double clicking the entry in the Network Monitor. That launched the usual browser dialog for saving the file:

After I hunted diligently but without success in the Network Monitor for a manifest, I looked in the Details page of the variant that VDH offered:

It appears that the master manifest & the media manifest were the same. In other words, there was no master manifest, only the media manifest. I have no idea how VDH found this manifest. As far as I could tell, both via filtering & via just scrolling the Network Monitor, that manifest was not listed. When I filtered on m3u8, a bunch of GIFs showed up. Not very helpful. Filtering on mpd gave nothing. I sure would like to know how VDH found that manifest. I gave the manifest URL that VDH found to ffprobe & this is what I got:
______________________________________________________________________________________
Duration: 00:41:27.72, start: 0.000000, bitrate: 0 kb/s
Program 0
Metadata:
variant_bitrate : 0
Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709), 864x486 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn
Metadata:
variant_bitrate : 0
Stream #0:1: Audio: aac (HE-AAC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp
Metadata:
variant_bitrate : 0
______________________________________________________________________________________
This was after I had selected the 1920x1080 resolution in the player. For some reason, VDH never recognized the higher resolution. There must be something in there that tells the player about the resolution but I just couldn't find it. Apparently, neither could VDH because even after refreshing the page, VDH still showed only the one low-resolution variant even though the player was playing at 1080p resolution.
So bottom line is, VDH downloaded this video no problem, although it couldn't find the higher resolution content. I was even able to find captions. I am running Windows 7 64-bit, Firefox 96.0.3 64-bit, licensed VDH 7.6.3a1 beta, CoApp 1.6.3. You say you are running Chrome. Unfortunately, Michel does not post beta versions of VDH for Chrome. Perhaps there's something in the beta that makes this work on Firefox when it fails on Chrome. I think at this point, I would use OBS to just record this thing instead of download it. What's OBS? Take a look over here:
https://groups.google.com/g/video-downloadhelper-q-and-a/c/BzPLK2YyL-sThere's a reference to OBS in there.
For your second video, I got this:

This is not a VDH problem. I'm have no idea what is going on with this one but the site refused to even let me see this one. That kind of puts VDH at the mercy of that problem. It's rather curious wording. It's not saying that it can't play the content because of my geographic location. It's another problem entirely. Odd.