Are you taking you temp at the same time each day? You have a lot of open circles, which suggest either you waking time is varying alot, or you are checking "sleep deprived". I've noticed with my temping that 30min either side of my normal wake up time makes a difference.

Your last cycle looks annovulatory and it looks like you haven't ovulated yet this cycle either. I can't see your first month. Have you been able to work out other fertile signs, like CM?

I recommend you do the free course FF has - it makes a big difference to understanding. I don't think another system would make any difference if you vary your waking times alot - you'd find the same thing if you did it mannually.

It can be frustrating when you're first learning all this. Persisting will help. If it does turn out your cycles are annovulatory, your charts will help doctors know what's going on.