How can I deal with men whose penis misses the entrance and accidentally tries to go near the urethra or into the anus?

They spend so long searching for the entrance that it becomes painful and unbearable, and I quickly dry out. Other men can enter smoothly, so I don't think my entrance is particularly hard to find, but… It feels like they’re thinking, “I want to get it in! I want to get it in! I want to get it in already—what the hell?!” They don’t calmly make sure they’ve found the right place, and instead rub and jab me hard with their penis. Their fingernails are also long, so being touched hurts, and they breathe heavily. They seem to have come with declining eyesight, but they don’t have the composure to calmly check where they’re trying to enter. I find myself thinking that even a virgin would be better at this. I’m having trouble because they’re very proud and dislike being shown what to do. I’d appreciate any advice.