Is there any way to recover my old account? I forgot the email i used, since i have been using this email for every game nowadays. Since i played swtor a long time ago, maybe i used a different email address.

I only know the name of one of my character, it is Darkchoco. A sith juggernaut.

There were several other characters but i forgot the names.

The only chance you got is to call customer support and talk to an agent about it. He/She might be able to find it and restore it to a different Email address if you can answer some security questions only you would know. Therefore it is a bad idea to tell this public forum about any account details you remember.

https://help.ea.com/en/help/star-wars/star-wars-the-old-republic/swtor-support/