How to tell my husband what he’s doing isn’t working lol

We have been married for 4 years and I haven’t orgasmed. It’s fine for me because I haven’t ever, so I don’t know what I’m missing I guess haha. But he does this thing recently where he like circles the tip of his finger (and nail) around the entrance of my vagina and it’s like ..... ouch?? Why are you doing this? Or he jabs his penis into what is basically my groin as a form of foreplay, I think he doesn’t realize he’s missing the mark. I feel bad because I don’t want to embarrass him but idk how to go about telling him none of this is working?? Haha