Avoid redirecting from https to http?

Question

Search Engine Optimization

Hello. The essence of the task is to avoid redirecting from https to http when adding a slash at the end of the url. I don't know how to properly check this. regulations:

#This Apache config file was created by Duplicator Installer on 2021-07-20 16:07:59.
#The original can be found in archived file with the name .htaccess__[HASH]
# BEGIN WordPress
# Директивы (строки) между `BEGIN WordPress` и `END WordPress`
# созданы автоматически и подлежат изменению только через фильтры WordPress.
# Сделанные вручную изменения между этими маркерами будут перезаписаны.
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_HOST} ^([^www].*)$
RewriteRule ^(.*)$ https://www.%1/$1 [L,R=301]
RewriteCond %{HTTPS} off

RewriteCond %{HTTP:X-Forwarded-Proto} !https

RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
RewriteCond %{THE_REQUEST} //
RewriteRule .* /$0 [R=301,L]
RewriteCond %{REQUEST_URI} ^(.*)--(.*)$
RewriteRule . %1-%2 [R=301,L]
# SLASH START

RewriteCond %{REQUEST_URI} !=/wp-admin
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !\?
RewriteCond %{REQUEST_URI} !\&
RewriteCond %{REQUEST_URI} !\=
RewriteCond %{REQUEST_URI} !\.
RewriteCond %{REQUEST_URI} !\/$
RewriteRule ^(.*[^\/])$ /$1/ [R=301,L]
# SLASH END
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress