buying still valid on larger time frame, while seller has little

according to Elliott Wave theory, since impulse wave iii was extended, corrective iv wave is expected to completed between 23.6% and 38.2% retracement of wave iii, but looking at the wave structure, it seems that wave iv will still correct to 38.2% and 5th impulse wave will continue, am placing buy order around 38.2% labelled iv on the chart