Fail the ASVAB

I study but I still manage to fall i feel like I'm dumb or not fit for the USAF like as soon as I seen the arithmetic I knew it was over the other section I was decent at now I don't know what the do anymore I study grammer hero videos still mange to fail I study asvab for dummies still manage to fail I don't know what to do anymore I don't want to fail when I take in these next 30 days

So is there any advice on what should I do or how I can improve to pass in these next 30 days

Update i find this asvab really easy, like I'm watching Grammer Heroe, I find it easy to solve the problems, and most of it is just really easy to me. I I just don't know how I failed