First, do what you like and try to find the same language as your target, so that you can easily blend in with him.
Second, a friend in need, only when a person is in trouble can he tell whether a friendship is true or not. If you really want to make friends with your target, then help him when he is in trouble,
share joys and sorrows with him when he is in danger;
Third, help each other. Only with the contribution of one party can such a friendship last forever. Only when both sides care about each other and give each other help and encouragement in times of crisis can such a friendship last forever.
if you can skillfully use these three methods, you will be able to make many friends, and the friendship between you and your friends will be very stable.