Quickseller [...]
I didnt know that I cant do that [...]
Quickseller I was copy/paste in (4 other/different) accounts but I didnt in (5 accounts that were just banned) [...] I created some dumb posts in local topics which are not my language [...] and [...] I started to write normal posts when I readed rules.
You will almost certainly not get your accounts unbanned.
My only suggestion would be to wait a couple of months, create a new account and message theymos asking for permission to return to the forum even though you were previously banned, and that you promise to constructively contribute to conversations and to only participate in discussions in languages that you can speak.
I am not sure if you have caused so many problems that he would not even be willing to allow you to return period, but if you really want to be part of the forum, then it won't hurt to ask. In the meantime, you are free to continue to read posts that others have written. You can also visit r/bitcoin and r/btc on reddit if you are interested in participating in bitcoin related discussions, although a lot of the discussions there are much more political.