The design of Plinko is intentionally unpredictable, and the outcome is meant to be based on luck rather than skill. While adjusting the speed of the balls might lead to different results, it's important to understand that there's no foolproof method for consistently hitting a particular multiplier in Plinko.
My Personal experience-- I hit 1000x atleast once a day playing it for 15 or 20 mins/day. I play at slow ball pace. What do you think is better strategy?