Why can’t I orgasm unless I’m on top

So my husband and I have an amazing sex life. We have sex daily if not twice a day. But I noticed recently that I can only orgasm when I’m on top. I feel like I’m almost there when he’s behind me but I just don’t.

I know it has to do with the rubbing of the clit but am I the only one?

I orgasm when he eats me or rubs me. I enjoy sex very much just wondering how I can orgasm in other positions?

Thanks

Update: we have tried a vibrating cock ring and it was amazing but still not the same as when I’m on top with penetration. I thought I was the only one lol 😂 I see I’m not alone