Detect browser language and redirect to appropriate language version of the website

.htaccess

# Redirect visitors who request the root domain path (e.g. www.mywebsite.ch) to the appropriate language version
# Fallback to English version if no matching browser language defined
# Based on language version being at e.g. www.mywebsite.ch/de/
# This has no effect on any subpaths of the website, and therefore has no effect on e.g. WordPress admin.
# Using a 302 temporary redirect header stops the redirection from being cached in the browser.

# language is ES-MX (Mexico)
RewriteCond %{HTTP:Accept-Language} ^es-mx [NC]
RewriteRule ^$ /mx/ [L,R=302]

# language is ES-ES (Spain)
RewriteCond %{HTTP:Accept-Language} ^es-es [NC]
RewriteRule ^$ /es/ [L,R=302]

# language starts with DE
RewriteCond %{HTTP:Accept-Language} ^de [NC]
RewriteRule ^$ /de/ [L,R=302]

# language starts with FR
RewriteCond %{HTTP:Accept-Language} ^fr [NC]
RewriteRule ^$ /fr/ [L,R=302]

# language starts with IT
RewriteCond %{HTTP:Accept-Language} ^it [NC]
RewriteRule ^$ /it/ [L,R=302]

# else redirect to the English version
RewriteRule ^$ /en/ [L,R=302]

Any device or browser which sends the HTTP Accept-Language header will be redirected.

How can i change the redirection from subpath to subdomain?

Ex.: I have 3 multilanguage websites instances in Wordpress Multisite:
Portuguese (pt-BR) - https://maxispuma.com.br/
English (us-EN) - https://en.maxispuma.com.br/
Spanish (es-ES) - https://es.maxispuma.com.br/

How can i make it redirect across subdomains based on browser preferred language?

Ps.: I'm new to coding... 😐😐

Hey !

Thank you very much for this one !

Appreciated!