Mock Assessment

Hello,
I have failed P7 n P5 twice now and I’m at loss as to what could have been responsible because my last attempt was with so much effort. Now I want to undertake mock assessment and explanation of my to how I fared but doesn’t know when to get such services. Both Kaplan n BPP required subscribing for their full study kits which I can’t afford. Please do you have any other idea how I can go about this? You advice is height sought n will be greatly appreciated.

Thanks