Many people do not like registering for discording, or using apps. I get it.
Use this link to a simple chat room. Put your in-game name and click enter, its that simple.
This would be geared more for players trying to meet up for raids on the forum, or if you do not want to litter your alliance chat with messages about raids.
Unfortunately, unless your friends not in your alliance are on the forum, there is no way to direct them anywhere since we cannot speak to friends. But, again, if you are meeting up on the forum in any of the “Need raid friends” threads, this is an easy method to communicate that requires none of your information or registration.