Tampons

I need help on how to put on tampons ... lmao I’ve seen videos but I think I put it in wrong. Like I out it in and it hurts so bad (when I’m heavy only because I know that if I’m light it will hurt) and i can’t put it all the way in... its size regular. Anyways it hurts when I put it in and it doesn’t go all the way up and it slightly hurts when I walk. I’m a Virgin Idk if it also why??