Fungal Nail Infection: Curanail, Loceryl, what next?

I've had a fungal nail infection on my big toe nail for a while now. Last year a pharmacy recommended Curanail. After six months of use, there was no sign of any positive effects. I went to a podiatrist and she suggested Loceryl. However, I'd have to go to a GP to get a prescription for it.
Fortunately, I bought some online from Germany. It's make by the same manufacturer of Curanail, Galderma.
However, I've been using it for close to six months and it's having no effect.

When I was at the podiatrist, she said that many of these products may not work. It's a case of using one for six months and if it's not working, move on and try another.

So, I've used Curanail and then Loceryl to no avail. Can anyone recommend the next treatment? It's only a nail infection, a cosmetic issue, so I won't be going to the podiatrist or GP and intend to buy the product in the EU.

Thanks.