Marriage/sex guidance

So I love my fiancé (no pics) Been together 4 years. Have a beautiful child. Getting married soon But to me our sex life isn’t great. She’s very “vanilla” I’d like it to be not that. We’ve talked about it. And she’s just not willing to explore kinks or different things. We also don’t have sex very often. And when we do, it’s like she just says wanna have sex. And that’s a turn off for me. Like rub on me do some foreplay something. I dnk what to do. Or I try and I get turned down, “I’m not in the mood, I’m tired, not now” and it makes me want to just say frick it and never try. She also neverrrr iniates it. It’s always me that does. Makes me feel shitty about myself. Before the kid, we had sex more often a few times a week. Now it’s once every couple weeks but again it’s pretty vanilla. Is this normal? Do other married folks have this issue?

This is not a troll post. I’m legit just trying to see others experience. Can you have a successful relationship with not being on the same page on this? She has so many great qualities. And I truly want to spend my life with her.