Why am I always treated as a joke, and even people 3-4 years younger than me laugh at me?

The credibility of a person's speech depends largely on your age and the credibility of your daily withdrawal.

If you are young and underage, you have a lot of immature words and immature content. If your personality is more immature, then your credibility or authority will be much less, and it will be difficult for others to believe your content when talking to you.

If you are a mature person, it is easy to master your serious attitude in daily life and don't joke easily at any time, then naturally it is easy to win the trust of others in the conversation, and it is also easy to be valued by others, and it is not easy for others to ignore your conversation.

So, if your words are taken as a joke, I suggest you observe your daily conversations more, joke less, be more serious, have a mutual attitude, and build trust slowly.

Of course, sometimes the atmosphere is good, everyone is playing and chatting freely, which may be a joke in itself, so don't pay too much attention, because it is impossible to be serious all the time in daily life and there can be no jokes.