Its normal that a man doesnt know his way around a vagina yes, but thats no excuse for him to be bad at his job, try directing him more vocally, yes its a chore but sometimes also quite erotic, should you choose not to or that isn't working i find i get the most direction when i find that right spot and my lover instantly grabs my head and holds me there, more passionately or strongly the better without suffocating. Most of us men dont quite understand what to do down there besides the natural just stick it in, not until we are taught or are incredibly attentive lovers that can pick up on the slightest signs(rare), my wife expressed the same to me after far too long of me not knowing, she thought i would insulted, i was just concerned that she felt she couldn't communicate so we made the effort to open up and use whatever language, however explicit, we needed to get the message across, sometimes a simple soft "there" is enough other times a "dont you take that tongue on my clit" was more necessary.

Its your pleasure, if hes an actual man he wants you to feel that and more but you need to communicate with him when he fucks up, we really are sort of just dogs that cant lick our own crotch, some of us need that direction or just the OK to be voiced.