As a Buddhist, where can I find a psychic? I want to know my past life (I won't talk about it here because Buddhism is superstitious).

Fix it yourself. More reliable. Isn't it nice to observe your past lives? In addition, it is a naive desire to know what your past life was like. Correcting one's behavior and thinking and making oneself develop on the right path is the most important thing, which is more important than knowing what I did in my last life.

The following is the story of Guo Qing, the author of Modern Causality Records (I remember the title should be like this, please forgive me if there is any mistake). When Guo Qing's lay man reached a certain level of practice, he observed others and found that many people were animals in previous lives. Then I looked at myself and found that I was an animal in my last life. However, we can see that the cultivation of Guo Qing lay people is quite high now.

So I advise you not to be too attached to your past life.