@Gabrietta
I once read a journal paper that said ~40% of actively practising Christian men have a low sex drive. That was a few years ago, but wouldn't surprise me. There's also quite a lot of shame around sex and the way it's presented to people pre-marriage in quite a lot of conservative religious communities, so it's not surprising if there are some learned and conditioned issues there.
Your story is virtually identical to one my only strongly Christian friend told me - they were both virgins, waited until marriage for sex and were then surprised it wasn't instantly magical, but was, frankly, disappointing, and continued that way for months until they took the time to educate themselves and actively work on it.
The myth is that sex is "natural", so people are "naturally" good at it. They're not. Lots of non-religious people are also rubbish at sex (or just clueless, or sometimes selfish), and a decent proportion of straight men feel insulted or upset by any insinuation that they're not effortlessly brilliant in bed (judging by the many posts on the internet and in women's magazines etc generally about unsatisfying sex!)
Sex can be that good. It can be amazing. It can be intimate and tender and ecstatic, transcendental and connecting and delightful and all of the wonderful things.
It can also be boring, perfunctory, disconnecting, resentment-inducing, painful, traumatic or unfortunately worse for some people in some abusive or violent situations.
You need to learn to be good at sex, and a lot of that is communication, practice, being willing to talk about it, try new things to see what you like, being curious about your self and your partner, wanting to play and explore with your partner, and being open to giving feedback about what your like, and receiving feedback about what your partner likes. All of those apply equally for your partner, of course.
And (although probably less relevant in your case), to remember that everyone is an individual with their own tastes, likes and preferences, so any person who says "but my last partner loved it" is someone I would tend to look hard at and avoid if any other red or amber flags, because what any other person likes is completely irrelevant.
So no, you're not at all unreasonable to be disappointed.
In the good news, there are plenty of ways, if he and you choose to, that you probably could develop a satisfying sex life with your husband. But you'd need to talk about it and you'd both need to be open to it, which might be difficult if there are shame issues in place due to religious influence.
If you want to work on it there are lots of sex manuals etc you could buy and work through together (I would strongly avoid any religious-based ones, they tend, in my experience, to have deeply unhelpful opinions and viewpoints, often very regressive and quite misogynist, as the books are often written by conservative men).
You could also consider sex therapy. COSRT is the professional body for sex and relationship therapists, so checking out their register would help you find someone reputable and well trained if that's a route you might want to go down.
Hopefully one or some of the above might be helpful.
But ultimately if he isn't willing to engage with any of that or work on it with you, then you might have to decide how important it is to you, and whether a lifetime of disappointing sex and not feeling desired is something you want to continue to live with.