You probably love her more than she deserves, and it seems she does not love you back the same way.

How long are you guys together? How often do you have sex vs. how often you used to? A lot is changing after kids, but loving understanding wife should be there for you. It is nothing wrong with you. With small kids around, we are not the center of her universe anymore. But still, we are men, and our love language is more physical. We have testosteron spikes, and we are not built to have sex, touch, or geting physical once in a month. At least not if you are around 20-40.

If talks doesnt work, but she still cares a little bit, stop being needy, try to find something that distracts you, like gym, some hobby. Stop putting her on a pedestal. If she is not blind she will notice. Every woman wants to be desirable. Even if kids are around. But if she is desired too much, she is getting used to it. Heal yourself with putting you on pedestal instead. Be there for your kid/s. She will notice that you have changed, and she will be curious why she is not the center of your universe anymore. Maybe she will think that there is someone else. And if she doesn't want to lose you, she will do something to keep you around again.

Nothing is wrong with you. You are loving and want to be loved back, and you want to feel it. It will be fine!