My video, Help me advices!

1) You play an overly complicated game against choppers, your complicated game tends to confuse you more than the opponent. Tactical tips for you: Loop short and spinny to the FH once in a while, it gives choppers nightmares to control it, if they pop it short and high you can just finish it to their deep BH. Finish juicy balls using a sidespin FH to their extreme FH side, it often doesn't come back, even if it does just redirect the ball to their deep BH. Loop to their middle to move them around, don't always loop to their BH. You also need a steady deep loop with good penetration to the BH. 

Serves: For me i only do two kinds of serves against choppers, 1) Fast long topspin to their BH to start the rally, 2) reverse serve to their FH side, tends to keep them honest and prevents too much spin variation from their pips. Don't fool around with too many serves because the return is going to be really confusing due to the pips (especially if you serve with a lot of sidespin and they use their pips to return it)

2) You're hitting too much and spinning too little, that is why you miss a lot of your FHs, the more spin on your FH the easier it is to create a stable arc, your arc is way too flat. Focus more on spin, use your legs to push up, otherwise you'll really struggle against underspin like you do now. (now you can see how your practice strokes affect you in games, coz i remember in your practice strokes you don't push up correctly from your right leg)