Configuring BTRFS Assistant

If I remember correctly you have very few files.
But for me I have a lot many files.
I have tried BTRFS, Sanpper before and I had the issue of multiple results all pointing to the same file.
See how many files I have:

[limo@eos ~]$ balooctl6 status
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
Baloo File Indexer is running
Indexer state: Indexing file content
Indexing: /home/limo/Books/Managing Investment Portfolios ( PDFDrive ).pdf
Total files indexed: 4,264
Files waiting for content indexing: 609
Files failed to index: 0
Current size of index is 1.09 GiB
[limo@eos ~]$ 


over 4000 files!
I admit some of them are really small text files created by a hierarchical note taking app that saves every note as a text file on its own But these are in tens not even hundreds.
As I said I read like crazy and I do my own research as well. PLUS manuals, invoices… etc.

I wonder how is it if you created one unique file say xyz.tx with one unique word “abracadabra” then take a some snapshots and search and see ho wmany results you will get!

By the way what is this that appears on top:

Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.

What’s wrong and how to fix!
Update:
I think I fixed it as in Inxi -Fxxx Strange Locale Settings