I agree with Val - after two years you should be a lot further ahead than you are even just riding once a week so your instructor would fail for me just on that count
All I see happening is you losing your confidence here
There is a lot to be said for encouraging people to push themselves as its how we progress but at the same time we ride for pleasure and if you are content and happy with where you are and no ambitions to do anything greater than why allow yourself to be pushed at all?
My children learnt to ride on safe ponies that did as they were asked the instant the request was made but unless you asked correctly they did nothing and they then moved onto the slightly more challenging ones that needed a little more 'asking' at times as they had it in them to say ' 'cant be bothered today' - but that is a big difference between a green horse that doesnt even understand the 'ask' in the first place
Find a new instructor/trainer.