Instead of bluntly saying no try to reframe your sentence by using ‘let’s find another way’ and then focus on what your child can do.
Set clear regulations as it will help your child to understand what alternatives they can opt for. Gently explain them.
You can provide your children with different choices that will fulfill your boundaries for them. For instead ‘ How about we do this instead?
Rather than saying no use gestures, body language, and facial expressions.
Acknowledge your child’s feelings and try to develop emotional regulation skills.
Give your child space to experience the natural consequences of their actions.
As we all know children learn from what they see. Share your own needs with a child in a kind way to help them to learn respect others.