Friends don't understand you, you will feel isolated, and then what should you do?

Then analyze what this "incomprehension" is all about.

Generally, we will say that "two people hate you, which may be incompatible personalities. If everyone hates you, then you should reflect on whether there is anything particularly unpleasant about you". But I don't think it's absolute. For example, if you are a particularly wise person and live among a group of ignorant people, they just can't understand you. They will laugh at you for whatever you say. Only time can prove your wisdom.

so you have to understand first that they don't understand me. Is it because they have different interests and preferences, or because their values are too different? Am I wrong? If you think you are right, but there is nothing wrong with them, just different ideas, then don't care too much, because people's knowledge and preferences are different, so learn to tolerate each other. If you can be friends, there are always people who share the same language and happy places together, so don't care about the "different, incomprehensible" side, just use the "same language" side to communicate.

Besides being isolated, do they ignore you or do you feel lonely?

If you ignore it, you should try to coordinate your interpersonal relationship.

If you feel lonely, there is nothing you can do. Einstein said that only a few people really understand his theory. Isn't he lonely? Did people ask what to do?