My wife spends more time with my kids than me and hence my kids are closer to her. They share everything with her but not me. This hurts me at times and I feel that they are drifting away from me. Please suggest me how do I avoid this.

Spend time with family and must spend quality time get involve in day to day tasks small ones also with kids. Go out with them for play, school etc to get involved more with them slowly they will start to treat you well and basic human needs will be justified so you guys will have a healthy relation.