I am experiencing the isolation and targeting of my roommate, but I have found my original self. After I don't have to maintain false friendship, I have more time and energy to cultivate my hobbies (calligraphy and flower cultivation), and I also try to do some part-time jobs to exercise my social skills. So being isolated is not necessarily a bad thing. Think about it from another angle: whatever happens is good for me. Would it be better to think like this? Here are two ways to deal with your situation.

First, the crowding out of the dark stamp? There is no other influence except emotion.

If this situation is better, it may be that the TAs speak in a strange way, which makes people unhappy (I am in this situation). I used to hear them holding guns and sticks, so I was upset and anxious, and sometimes I couldn't sleep. Now I have reduced my time in the dormitory. I use this time to study in the study room or library, do part-time tutoring, run and exercise, and take a walk in the school. I feel much fuller than before (this kind of happiness is different from eating, drinking and having fun with fair-weather friends). This is a diversion of attention, and gradually you won't care what the teaching assistants do or think.

Second, it has caused you other practical troubles besides emotions.

For example, pouring water into the bed dirties the newly washed clothes, which affects the normal life. This situation cannot be blindly tolerated. It's time to find a tour guide, collect evidence and communicate with the tour guide. It's really not good to say that you are psychologically fragile and want to commit suicide. Ask the tour guide to help you adjust your dormitory. Out of sight, out of mind, start over in a different environment.

In either case, I want to say that being isolated will bring us pain, but it will also let us experience growth. If being isolated is the fault of TAs, it can cultivate your ability to deal with problems independently with the mentality of getting along with loneliness. If you are wrong, you can also reflect on it in time, correct your mistakes and become a better yourself. Weak countries have no diplomacy, and so do personal exchanges. If we exercise ourselves stronger, excellent people will naturally approach. I hope Yo-Yo can find something more important than interpersonal relationship, and make progress towards his own goals and things he loves.