I believe if you went for a trading class you won't be trading through assumption maybe it was because you learnt it on your own that was why you were trading with assumption, well just like you said the more you trade the more knowledgeable you become in that aspect trading is not that easy I have a friend when he started trading he was losing a lot of money but that did not make him stop trading because he's teacher told him the only way he can become perfect is by learning some strategies on his own and when he's losing he should not stop he should continue so he did exactly what his teacher told him and right now he's gaining more than his losing.
Since you have already started gaining in trading surely you will recover all you have lost but don't put your mind in trying to recover all you have lost forget about your loss and focus in the future of your winning.
Yeah, learning how to trade means a lot and you should be learning how to do that as well as you can. It's not an easy task, but someone teaching you would result with better results. It's not something that can be done overnight, it takes months to be great at it, and then after studying is done you have to realize that you should be making some good returns with what you have later on as well.
So you need to gain experience after you study, because just study isn't enough and if you gain some experience with some small amounts as well, then you can do better job. This isn't easy but it can be done and many people are doing that, so you should look at that possibility. Learning, and then experience, much better duo.