If the US stock market experiences a deep correction similar to that of April this year, it will present a great opportunity to buy cheap shares (including in the cryptocurrency market).
However, it's hard to say whether such an opportunity will even occur. Take Nvidia for example: institutions sold around 190; are they really going to buy it back at 180?
Many stocks are currently on the verge of a weekly correction. If they dip, that would be a great opportunity. Be patient and wait.