What to do with this life?

First of all, hello everyone. I am 25 years old and it has been 2 years since I graduated from university. I have not been accepted in any job applications in these 2 years and I am still looking for a job.

Recently, I applied for a master's degree. A few months ago, I received a rejection from the master's department of my favorite university. The field I wanted to work in was only at that university. I worked day and night to get in. When I received the rejection from the university, I was very upset and disappointed. Everything in my life ends in failure.

At first, I thought that maybe it was because better things would happen, but that is not happening either. I am in a state of learned helplessness.

All of my friends have jobs, some are engaged, some are in serious relationships. In my opinion, finding someone who is good at heart and who is right for you is a great chance and success. I am also unsuccessful in this regard. I have never had a serious relationship until this age. I would love to have one. I had feelings for many men but they didn't feel love for me so it didn't happen. Some were platonic and some said they didn't feel anything romantic towards me.
I was talking to a boy recently. I liked him but he insulted me, broke my heart and I deleted him from my life. Sometimes I think God doesn't love me. I'm not a religious person but I believe in God. I didn't deserve anything to experience these things. I always tried to be a good person. I always tried to be good and useful to my country, my family, humanity and myself. I don't have the strength to fight all these things anymore.

I'm still grateful for what I have.
People say you're still young. Shouldn't we be happy when we're young? I cry all the time and pray for things to go well but nothing happens. I'm so tired. What should I do? I'm waiting for your thoughts...

What to do with this life?
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