If things are not working as they should, I suggest seeing a doctor who specialises in these issues.I personally think none of the rules people think of apply to me really. I was still a virgin at 35 after my wedding night because we couldn't figure out how to work it. Eventually it became apparent she had to work on it and get it in before I lost it hardness-wise
and I had to even then rely on her to tell me if I lost it. To orgasm I had to play a fantasy in my mind essentially like I was still going solo like I had to until 35. Just looking at girls was better really.
Maybe get your testosterone and circulation checked? Poor circulation (I.e. heart disease) can first appear as an inability to get or maintain an erection.
Excess masturbation can desensitise the nerves in that region, and I believe certain other medical conditions can damage the nerves (viral infections, diabetes etc).
Then you have trauma and programming that could mean „you’re not in the mood“.
Lastly - did you ever feel any spark of sexual attraction? If so, there are things you can work on together here.
For example knowing each others love languages. If you are visual, then perhaps she can wear something you both agree upon?
Maybe she is doing something you do not like?
The point is, it may be „normal“ for you - but it’s not normal, and suggests their is something wrong.
Have you read the romance novels? As an archetype they are good for working out what is actually normal.