Handjob.. HELP 😩😭

I've been with 2 previous guys and both of them came so easy, all I did was rub their head and they came. But with my boyfriend i have now he likes me to focus more on his "body" like not the head but the middle of his penis.. But his penis is literally so fat I can't fit my hand around it! And it's long too! I'm always gagging on it while giving head but I can't even give a good hand job because his penis barely fits in my hand😖 helpp, tips anybody?