A master said that I committed many crimes in my last life! This life is doomed to suffer! What's the point of living like this?

You are illogical and don't understand Buddhism.

First of all, a master with profound practice can't show his magical powers and tell fortune. Buddhism does not advocate magical powers, and the Buddha also clearly said that one of the occupations that monks (monks) cannot engage in is fortune telling. This master's words and deeds are not as good as Buddhism.

As for the statement that you committed a crime in your last life and paid it back in this life, it is partly in line with karma, but the time is not so clear, so this statement is somewhat far-fetched.

You and the past are the same person (or consciousness). It's not that I don't know each other. It's just that you went through a process of forgetting before rebirth (such as drinking Meng Po Tang in legend). As for why you have to go through this process, it is very simple. If you know all the ins and outs, can you still play? Will there be a deep understanding and sentiment?

I'm afraid you don't even have the basic knowledge of Buddhism, so don't question what is profound.

My humble opinion is for reference only.