Why I see your locale output randomly formatted? were you edit it manually? or were you have a storage failure?
Compare with mine:
LANG=en_GB.UTF-8
LC_CTYPE="en_GB.UTF-8"
LC_NUMERIC="en_GB.UTF-8"
LC_TIME="en_GB.UTF-8"
LC_COLLATE="en_GB.UTF-8"
LC_MONETARY="en_GB.UTF-8"
LC_MESSAGES="en_GB.UTF-8"
LC_PAPER="en_GB.UTF-8"
LC_NAME="en_GB.UTF-8"
LC_ADDRESS="en_GB.UTF-8"
LC_TELEPHONE="en_GB.UTF-8"
LC_MEASUREMENT="en_GB.UTF-8"
LC_IDENTIFICATION="en_GB.UTF-8"
LC_ALL=
What formatting difference you can see?
Please, first answer to yourself in try to note what I noted. Only after that continue
Try more
Even more!!! Harder!
Your locale output contains some lines w/o quotes. May be it is the cause, may be not, I do not know.
Try to re-generate locale:
sudo locale-gen
That’s what I did in other lack (caused the package re-installation): [Unstable Update] 2021-05-28 - Kernels, Perl, Cinnamon 5.0, Haskell, Tesseract, Cutefish - #110 by alven
After that try to re-start your applications (there was no need to reboot for me there, but I do not know your case)