In the same video where @haejin first identified this a,b,c,d,e correction he made it clear he thought $6,000 or lower was possible. At the time he didn't think it was very likely but he still advised that buy ladders in that zone were reasonable. I don't remember him making any hard calls about BTC prior to that during this correction.

He seems to redraw his patterns from scratch in many videos. And since TA is best when it's done with the most current information, resistance lines can move from day to day as a pattern expands slightly beyond its initial trajectory. As the currency moves closer toward the bottom in both price and time it becomes easier to pinpoint its destination. This is why TA changes from day to day. None of the changes you mentioned should have caused you to make any bad buys or sales, even if you were acting impulsively.

When a pattern like a triangle or even a wedge completes, there is no guarantee that a price will head in one direction or another. But identifying these patterns allows us to lean on an understanding of the propensity of price movement so that we are right more often than we are wrong. What more can you really ask for?