tlmgr install luatexja-fontspec

[Haines Brown]

I did a new installation of Debian 12 and proceeded to install TeXLive 
2025. I had been runing 2024 until now.

One of the packagees used for a docuement I've been working on was 
luatexja-fontspec. With TL 2024 processing the file with that package
did just fine.  

  ! LaTeX Error: File `luatexja-fontspec.sty' not found.

When I run $ tlmgr install luatexja-fontspec in order to install it, I 
am told that user mode is not initialized. Read the documentatation. I 
am not told what documentation this refers to and its location.

I then do $ tlmgr init-usertree and again try to run $ tlmgr install 
luatexja-fontspec. I am told that TL is switching to user mode. I am 
also told: tlmgr: Local TeX Live (2022) is older than remote 
repository (2025). Cross release updates are only supported with
  update-tlmgr-latest(.sh/.exe) --update See
https://tug.org/texlive/upgrade.html for details.

What does it mean to say that a TeXLive 2022 is older than a 2025 
remote repository. This sounds illogical. What is meant by remove 
repository? My TL is 2525, not 2022.

Would someone kindly tell me where I went wrong (in simple terms, 
please).


-- 

     Haines Brown