I won 6 btc then lost it but I'm gonna try and get some of it back
You will definitely will get back some of them or all 6 BTCs also. But the catch is after getting back, I believe you will not stop gambling and you go for another cycle of winning->loosing->recovering. This is the common scenario of many gambler's life cycle.
Are you really sure after loosing people again they will win in gambling? and is this cycle is true winning->loosing->recovering?
I don''t think is there any rule in gambling after loosing one must win again. Most gambles are thinking this kind of cycle will be there and they will get a chance to recover their loses but many gambles never get this chance so they lose everything at the end.