BTC Long in case the price reaches back the support zone

I expect the price goes down the support level, the selling force to be absorbed, and BTC to go up.
However, it should not place the limit order in the support level because the price falls from the resistance zone. The price could absolutely come through the support zone or sweep the Stop-loss point. For safe, the wait for buying signals (candlestick models, indicators,...) is a good choice.