Hey Dan, ok makes sense so for 1: I think in this situation it’s best to “fish” the ball back which is like a topspin lob but with the aim of just keeping the ball lower and tighter to the net and try to get back into the table after a couple.
2: If you struggle to chop the 2nd one that’s quite normal because when the topspin your first chop they have to add a lot of spin so it means the next shot is tough. I would suggest after the first chop you can prepare for a counter attack or an aggressive block as hopefully often their loop against the first chop will be more spin and lifting it up rather than a very fast shot.
3a: The key with this shot is playing a topspin shot and not hitting too flat but also brushing forward so you don’t lift the ball of the end, a great way working on these combos in training and practice going from your chop, getting the push back and coming in to attack the next ball. Often it comes down to footwork and really getting into position for the shot first before trying to attack.
3b: I would say for sure try to get used to getting into position and looping this ball otherwise you are handing back the initiative in the rally straight away.
Hope this helps! Tom 🙂