It is absolutely true that hurting people hurt people. Don’t be quick to judge the behavior on the surface and not see the need below.
When children feel unwanted, unheard, not valuable, incapable, powerless, or hurt, they often lash out. Parents love your children well.
The lack of love will damage a child emotionally and will have consequences throughout their lives affecting their own children. Stop the generational sins.
You cannot do it alone. Put on God’s love. His love is perfect. It leads towholeness. Jesus makes broken things new.