Could you please give me some tips for the happy Muslim family? In other words, what are the characteristics of the Muslim family?

Alhamdu-li-llah wa as-Salatu wa as-Salamu ‘ala Rasool-il-llah,
To summarize, it is a family that is conscious of God at all times, and works to please him. This will give them a common purpose, and make them stay together. Having no common purpose is like having two passengers in a car, but one intends to head east while the other wants to head in the opposite direction.
There is nothing that will better unite us and give us that common purpose than the pursuit of Allah’s pleasure.
It is a family that recognizes the imperfection of man, and works to make the best out of the realirt. Allah says what means, “And if you dislike them, you may dislike a thing and Allah makes therein much good” and the Prophet (pbuh) said, “No believing man should ever hate a believing woman; if he disliked some of her qualities, he must like others”
It is family that has compassion when matters are good and mercy when there is a dispute, but there is tranquility and serenity at all times, Allah said what means, “And of His signs is that He created for you from yourselves mates that you may find tranquility in them; and He placed between you affection and mercy. Indeed, in that are signs for a people who give thought”
It is a family where people think about their duties before they ask for their rights as the Messenger said, “Do that which is upon you and then ask Allah for that which is yours”
It is a family that prays and plays together as the Prophet (pbuh) said, “May Allah have mercy upon the man who wakes up to pray during the night and wakes his wife to pray, and if she does not wake up he splashes water on her face. May Allah have mercy upon the woman who wakes up to pray during the night and wakes her husband to pray, and if he does not wake up she splashes water on his face.”
It was also authentically reported from ‘Aisha (Allah be pleased with her) that she used to race with the Prophet, and one time she beat him, and after she gained some weight, hey raced, and he beat her. Then he said: this time makes up for the other one.
May Allah protect all Muslim families.
Allah knows best.