redirecting subdomain to another URL

Hi!
First of all, it’s not exactly WordPress related. But half of my websites are based on WP and I can’t think of a better place to ask for help.

I’m having trouble redirecting a subdomain of mine to a longer URL. Trying to do it in my htaccess file but none of the variants I’ve tried works..

My htaccess goes like this:

#—- Added by suresupport.com, please don’t remove this block —-
BrowserMatch “^Mozilla\/4\.0$” badBot
BrowserMatch “^-$” badBot
Deny from env=badBot
# —- end of suresupport.com code ———————————
##
# @version $Id: htaccess.txt 21101 2011-04-07 15:47:33Z dextercowley $
# @package Joomla
# @copyright Copyright (C) 2005 – 2011 Open Source Matters. All rights reserved.
# @license GNU General Public License version 2 or later; see LICENSE.txt
##

##
# READ THIS COMPLETELY IF YOU CHOOSE TO USE THIS FILE!
#
# The line just below this section: ‘Options +FollowSymLinks’ may cause problems
# with some server configurations. It is required for use of mod_rewrite, but may already
# be set by your server administrator in a way that dissallows changing it in
# your .htaccess file. If using it causes your server to error out, comment it out (add # to
# beginning of line), reload your site in your browser and test your sef url’s. If they work,
# it has been set by your server administrator and you do not need it set here.
##

## Can be commented out if causes errors, see notes above.
Options +FollowSymLinks

## Mod_rewrite in use.

RewriteEngine On

## Begin – Rewrite rules to block out some common exploits.
# If you experience problems on your site block out the operations listed below
# This attempts to block the most common type of exploit attempts to Joomla!
#
# Block out any script trying to base64_encode data within the URL.
RewriteCond %{QUERY_STRING} base64_encode[^(]*\([^)]*\) [OR]
# Block out any script that includes a <script> tag in URL.
RewriteCond %{QUERY_STRING} (<|%3C)([^s]*s)+cript.*(>|%3E) [NC,OR]
# Block out any script trying to set a PHP GLOBALS variable via URL.
RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]
# Block out any script trying to modify a _REQUEST variable via URL.
RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})
# Return 403 Forbidden header and show the content of the root homepage
RewriteRule .* index.php [F]
#
## End – Rewrite rules to block out some common exploits.

## Begin – Custom redirects
#
# If you need to redirect some pages, or set a canonical non-www to
# www redirect (or vice versa), place that code here. Ensure those
# redirects use the correct RewriteRule syntax and the [R=301,L] flags.
#
#RewriteRule ^/karujaan https://neti.ee [R,L]
#RewriteCond %{REQUEST_URI}
#RewriteCond %{REQUEST_URI} !^/karujaan$
RewriteCond %{HTTP_HOST} (www.)?klaasparlimang.ee
RewriteRule ^$ https://neti.ee [L]
#####
RewriteCond %{HTTP_HOST} (www.)?klaasparlimang.com
RewriteRule ^$ https://www.erpmusic.com/festival-glasperlenspiel/glasperlenspiel-2015 [R,L]
RewriteCond %{HTTP_HOST} (www.)?erprussia.com
RewriteRule ^$ https://erprussia.erpmusic.com/ [R,L]
RewriteCond %{HTTP_HOST} (www.)?nspc2015.com
RewriteRule ^$ https://nspc2015.erpmusic.com/ [R,L]
RewriteCond %{HTTP_HOST} (www.)?festivalorient.com
RewriteRule ^$ https://www.erpmusic.com/festival-orient [R,L]
RewriteCond %{HTTP_HOST} (www.)?erpartist.com
RewriteRule ^$ https://www.erpmusic.com/index.php?option=com_content&view=category&layout=blog&id=13&Itemid=122 [R,L]
RewriteCond %{HTTP_HOST} (www.)?peetervahi.com
RewriteRule ^$ https://www.erpmusic.com/index.php?option=com_content&view=article&id=163&Itemid=223 [R,L]
RewriteCond %{HTTP_HOST} (www.)?erpmusiclive.com
RewriteRule ^$ https://www.erpmusic.com/index.php?option=com_content&view=article&id=104&Itemid=128 [R,L]
RewriteCond %{HTTP_HOST} (www.)?africanround.com
RewriteRule ^$ https://www.erpmusic.com/index.php?option=com_content&view=article&id=21&Itemid=176 [R,L]
RewriteCond %{HTTP_HOST} (www.)?arktikaantarktika2010.com
RewriteRule ^$ https://www.erpmusic.com/index.php?option=com_content&view=article&id=25&Itemid=171 [R,L]
RewriteCond %{HTTP_HOST} (www.)?glasperlenspielsinfonietta.com
RewriteRule ^$ https://www.erpmusic.com/index.php?option=com_content&view=article&id=193&Itemid=201 [R,L]
RewriteCond %{HTTP_HOST} (www.)?erpcharter.com
RewriteRule ^$ https://www.erpmusic.com/Charter/index.htm [R,L]
RewriteCond %{HTTP_HOST} (www.)?ebcog2012.com
RewriteRule ^(.*) https://ebcog2012.erpmusic.com/$1 [R,L]
RewriteCond %{HTTP_HOST} !(www.)?erpmusic.com
RewriteRule ^(.*) https://www.erpmusic.com/$1 [R,L]
## End – Custom redirects

##
# Uncomment following line if your webserver’s URL
# is not directly related to physical file paths.
# Update Your Joomla! Directory (just / for root).
##

# RewriteBase /

## Begin – Joomla! core SEF Section.
#
RewriteRule .* – [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
#
# If the requested path and file is not /index.php and the request
# has not already been internally rewritten to the index.php script
RewriteCond %{REQUEST_URI} !^/index\.php
# and the request is for something within the component folder,
# or for the site root, or for an extensionless URL, or the
# requested URL ends with one of the listed extensions
RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC]
# and the requested path and file doesn’t directly match a physical file
RewriteCond %{REQUEST_FILENAME} !-f
# and the requested path and file doesn’t directly match a physical folder
RewriteCond %{REQUEST_FILENAME} !-d
# internally rewrite the request to the index.php script
RewriteRule .* index.php [L]
#
## End – Joomla! core SEF Section.

Could someone please help me?
Say redirecting https://blablabla.erpmusic.com to https://www.asdasd.com/tatatata.php?id=1

Thank You very much in advance!