Working .htaccess for Single Page Apps

.htaccess

<ifModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule (.*) /index.html [QSA,L]
</ifModule>

hi, I need to redirect using the parameters, do you know how I can do?

The problem is that if I redirect to index, in the canonical name I lose the parameters and for the seo, it is not a good thing.
so, for example
If I use this rule:
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.*) /auto [QSA,L]
if my input url is https://myserver.com/auto/alfaromeo and i redirect to auto,
the page is correct, but the canonical name is
https://myserver.com/auto/
is there a way to pass the parameter, too?
Thanks a lot