Backhand topspin technique

Hi i have generally a question about my Backhand topspin technique so i Had some Coaches they thought me that i should use Rotation in my Backhand topspin to create more Power in the backhand but i See this way i can Not really react to fast Returns on the table or even from mid distance If my opponent Plays a fast return Back. So i feel like i need a shorter stroke in my Backhand topspin to really have Control and also having this way max Speed and spin in my Backhand topspin. The Thing Is what i really do notice in my Backhand topspin If the stroke IS short beginning from the middle of my Body i do notice that i Lack Speed and spin so i am using my forearm and my wrist get used at the contact of the ball. The thing Is i looked Up to some Videos really to improve my short Backhand stroke Like trying to do the backhand topspin with a short stroke live ovchatrov for example but i See i still Lack Spin and Speed because i Just Beginn using my forearm and at the contact i am using my wrist. So i thought that likely the only way to really have a relaiable Method with a short stroke to get a very fast and spinny Backhand IS by using the Same technique or similar AS Liam Pitchford because i also saw just with little effort because of His late whipping Motion i mean He IS using delayed wrist whipping Motion that this Is the only Method to create max quality for a Backhand topspin for a Club Player with a short Backhand stroke because really Not important what i am trying else with a short Backhand stroke i feel i either Lack Spin or Speed and i by myself Not understand how its possible with a short Backhand stroke to create Speed and spin without this delayed whip that Liam pitchford use so for all other Professional table Tennis Players i feel Like they Just practice there Backhand topspin with perfect Timing and also max perfect use of every muscle. So i think as a Club Player with a short stroke and Not Elite practice i can only use Backhand topspin of Liam ?