After 40 years of gliding, over 2000 flights, including some instructing, I have long been of the opinion that we try and teach landings too early. In the case of this original poster, to expect to be able to land properly, consistently, after only 14 flights, is far too demanding.
It is quite a while after somebody has started to learn flying before you can even fly straight and level consistently without thinking too hard about it.
A good landing can only come after a good approach, which means having had first a good circuit; having a good appreciation of what the picture should look like during the approach, round out, and landing; and being able not only to fly a straight approach at a constant speed, with judicious use of air brake to maintain the correct flight path, but at the end be able to change attitude gradually during the flare, and change speed, and keep it at the right height above ground during the hold off. After 14 flights?
How much time in 14 flights has been spent on approaching? A few seconds each time. How much time on rounding out and holding off? Even fewer seconds each time.
Some of the 14 landings will have been done by different instructors, and may not look the same each time anyway, with different wind speeds or possibly for other reasons. Probably none of the landings the pilot himself has done during those 14 flights has been the same as each other. There is no chance of knowing yet what the picture should look like, and being able to reproduce it consistently.
For what it's worth, it wasn't until shortly before my going solo on my 70th flight that I was anything like getting consistent good landings. For a long time after that, if I was under pressure for some reason and had not had a good approach leading to a good landing, all too often the landings were not good.
I think the worst thing that happened to me was an instructor talking me through a landing on my fifth launch, writing in my book that I could do my own landings, after which I probably did 50 all different and most of them wrong.
So don't get discouraged, you are normal. Your training is normal, but not what I think it should be. I'm used to being in a minority of one of the gliding world, so don't expect most people to agree with me.
Just my two pen'th.
Chris N.