You are missing the subsequent files ( .002 , etc.). All files must be in the same directory.

tpm5eanonq_.7z.001 is useless on its own. It is simply part one of a larger file. Why Do Files Get Split?

If you are downloading a 50GB file and the connection drops at 49GB, you often have to start over. If you are downloading fifty 1GB files, you only need to redownload the failed 1GB piece.

This is likely a randomized or obfuscated identifier used by the person who originally packed the file to prevent easy indexing by search engines or hosting sites.

7-Zip will automatically recognize the sequence and combine them into the original, single file/folder. Alternative Tool: Keka (macOS) Download Keka. Place all parts in the same folder.

is the 001 file compared to others (is it the exact same size)? What software did you try to use to open it?

Understanding "tpm5eanonq_.7z.001": A Guide to Split 7-Zip Archives

Ensure tpm5eanonq_.7z.001 , tpm5eanonq_.7z.002 , etc., are all in one folder.