I'm an anarchist, we don't call anybody tankies. Tankies is a term coming from the UK i think the 80s some eastern european nation was taken over by the USSR and some Brittish came out in support of it. So they were called tankies.
These political fighting words need to be layed to rest. Communists hate me as much as anybody else but I'd rather engage on the idea level instead of ad hominem attacks and name calling.
I suspect this whole tankie thing might be a coordinated propaganda campaign geared at discrediting communists and at the same time creating tension between them and other leftits. I suspect this as this whole infighting over small differences doesn't lead to a victory for the left but effectively disables and neutralizes it.
Try to befriend a german online, maybe somebody who wants to learn your language in return so you could take turns talking in either language. Not sure if that makes sense.