the way i fixed the problem as tilting my feet forward on the pedals. it gave me something to kinda grab onto. but thats just me. lemme watch your vid again…
k. so since you were leaning over the seat it was stopping you from tucking. now, your trying to correct the problem but that is making you fall backwards?
with practice, youll find a happy medium… once you get your technique right youll be doin good
Try pulling up more, to lock your feet to the pedals.