WordPress compression not working on localhost, XAMPP - php

Question

I need some help with WordPress speed optimization via .htaccess.
For now, the website is still running on localhost, XAMPP, Apache v3.2.4.
What I did / tried:
turn on GZip in .htaccess
enable mod deflate in .htacess
place .htaccess in WordPress root directory
Google Lighthouse Speed Test via the Chrome dev tools does not detect:
Compression (message: Enable text compression)
When I examine the response header via dev tools, there's no cache-control: ... entry.
I would appreciate some help on how to fix these problems. I figure that I went wrong somewhere in my setup, but I'm not sure where.
So, here's what I did for COMPRESSION in .htacces:
<IfModule mod_setenvif.c>
<IfModule mod_headers.c>
SetEnvIfNoCase ^(Accept-EncodXng|X-cept-Encoding|X{15}|~{15}|-{15})$ ^((gzip|deflate)\s*,?\s*)+|[X~-]{4,13}$ HAVE_Accept-Encoding
RequestHeader append Accept-Encoding "gzip,deflate" env=HAVE_Accept-Encoding
</IfModule>
</IfModule>
<IfModule mod_deflate.c>
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE text/javascript
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE image/x-icon
AddOutputFilterByType DEFLATE image/svg+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/x-font
AddOutputFilterByType DEFLATE application/x-font-truetype
AddOutputFilterByType DEFLATE application/x-font-ttf
AddOutputFilterByType DEFLATE application/x-font-otf
AddOutputFilterByType DEFLATE application/x-font-opentype
AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
AddOutputFilterByType DEFLATE font/ttf
AddOutputFilterByType DEFLATE font/otf
AddOutputFilterByType DEFLATE font/opentype
# For Olders Browsers Which Can't Handle Compression
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
</IfModule>
<IfModule mod_headers.c>
RewriteCond %{HTTP:Accept-Encoding} gzip
RewriteCond %{REQUEST_FILENAME}\.gz -f
RewriteRule \.(css|ics|js|json|html|svg)$ %{REQUEST_URI}.gz [L]
# Prevent mod_deflate double gzip
RewriteRule \.gz$ - [E=no-gzip:1]
<FilesMatch "\.gz$">
# Serve correct content types
<IfModule mod_mime.c>
# (1)
RemoveType gz
# Serve correct content types
AddType text/css css.gz
AddType text/calendar ics.gz
AddType text/javascript js.gz
AddType application/json json.gz
AddType text/html html.gz
AddType image/svg+xml svg.gz
# Serve correct content charset
AddCharset utf-8 .css.gz \
.ics.gz \
.js.gz \
.json.gz
</IfModule>
# Force proxies to cache gzipped and non-gzipped files separately
Header append Vary Accept-Encoding
</FilesMatch>
# Serve correct encoding type
AddEncoding gzip .gz
</IfModule>