I have played table tennis for almost 2 years and i have learned topspin for atleast a year and my coach tells me i dont go down enough during my strokes but i feel like i go down to the ground (and like 5 more problems i try to fix) and its very uncomfortable even when legs are wide and now i am thinking of quitting table tennis i have played almost every day for past 2 years and friend who has played less and i never lose to him can make perfect topspin stroke and coach tells him he is very good with forehand topspin but i am very bad and everyday he tells me what i need to do and i give my best but my forehand topspin just gets worse and worse and im overthinking it and im very smart compared to my friend who is not even close to me in physical state but he is like 20cm taller than me. Every training we focus mainly on my forehand topspin and i get to play it much more than my friend in training because hes is already good but its so hard to make consistent stroke because he just blocks the balls everywhere so i have to move and think where other balls go but when i blocked to him every ball was to same place. What do i do now i think i just want to quit table tennis and no advice works that i have tried to search for.