Are you both equally busy and active socially?
For example, A. do you come home from work and sit on the sofa watching telly while she deals with the kids and makes dinner etc? Then fire questions at her from the sofa and get pissy when she doesn't respond?
Or B. are you at the table helping your kids do homework, whilst simultaneously chopping veg and asking your wife a question about it, but she doesn't answer because she's doom scrolling on her phone?
Obviously A is you at fault and B she could do with focusing on you and the kids a bit more ( unless this is the first bit of "down time" she's had in the day and you're interrupting it).
Socially:
A. Does she have book club and the gym and her school friends and mum friends and family that she spends time with and talk to, whilst you have one mate who you go to the pub with once a month and then are expecting your wife to entertain you the other 29 evenings of the month but she's busy with friends/family?
Or B. is it you whose out more/more social and she's at home with the kids and then you're expecting her to be up for sex on the nights when you do grace her with your presence?
Or C. You both have similar levels of social life that takes you out of the home, but you're just not connecting when you're together?
A. You need to get more of a social life and not depend on her so much, B, she needs to be allowed to have equal downtime and C. Have you tried marriage counselling?
Obviously this is a very generalised response, but without getting more detail on the day-to-day of your existence, it's really hard to say whether you're being a knob, she's being a bitch, you no longer love each other or none of the above.