Regularly invest and buy during the pullback.

Regularly invest a fixed amount in the SP500 index, with an expected annual ROI of 7-9%.
Buy QQQ and SP500 indices every time there is a 5% dip, then sell at the peak to do swing trading.
Of course, I will also buy favorite stocks such as TSLA, AAPL, GOOG, MSFT, LULU, MA, U, etc.