Remove Query String from 301 Redirect through htaccess

Question

I am facing a couple of 301 redirect issues.

Issue 1:

I want to redirect some links to another URL of the same site:

Redirect 301 /path-example.html /dir/subdir/

The redirect is working but it's generating query string like this:

example.com/dir/subdir/?str=path-example

How do I remove the query sting ?str=path-example ?

Issue 2:

I want to redirect some links to the homepage:

Redirect 301 /some-path.html /

But it's leaving a ? after a trailing slash like this:

example.com/?

How do I remove /? from the forwarded URL?

Existing rules:

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

RewriteEngine On
RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
RewriteCond %{QUERY_STRING} ^s=(.*)$
RewriteRule ^$ / [R=301,L]

Thanks!

Answer 1

Please place these rules top of your htaccess files(in case you have more rules in it). Please make sure to clear your browser cache before testing your URLs.

<IfModule mod_rewrite.c>
RewriteEngine ON
RewriteBase /

RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

RewriteRule ^index\.php/?$ - [L,NC]

RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]


##Redirection with removing query string rule here.
RewriteCond %{THE_REQUEST} \s/[^.]*\.html\?\S+\s [NC]
RewriteRule ^ /dir/subdir? [R=301,L]

##Redirection to site's home page here for html urls.    
RewriteCond %{THE_REQUEST} \s/[^.]*\.html\s [NC]
RewriteRule ^ /? [QSD,R=301,L]

RewriteCond %{QUERY_STRING} ^s [NC]
RewriteRule ^/?$ / [R=301,L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

</IfModule>

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EDIT: My first answer without OP's other rules set is as follows:

RewriteEngine ON
##Redirection with removing query string rule here.
RewriteCond %{THE_REQUEST} \s/[^.]*\.html\?\S+\s [NC]
RewriteRule ^ /dir/subdir? [R=301,L]
##Redirection to site's home page here for html urls.    
RewriteCond %{THE_REQUEST} \s/[^.]*\.html\s [NC]
RewriteRule ^ /? [QSD,R=301,L]