Faced this issue yesterday and also just now.
1 - https://retroarchofficial.itch.io/retroarch
2 - Multiple files, from 150mb to 250 mb
3 - Uploaded May 2023
5 - South Asia
6 - Downloads fine, but files are corrupt. I checked the 7zip files in an editor, the file starts with the correct header and has binary data. Same with zip files.
7 - Through regular vanilla browser downloads.