I always feel like no one loves and cares about me
Well, there is someone who does!
I'll tell you
Once, God created a perfect world where there was no bad things, no sickness, and no death. But people disobeyed God so bad things came to the earth. These bad things were called sin.
We were supposed to be punished for the bad things we do but because God still loved and cared for us, he sent his only son down to earth to die for us. His death has mended the relationship with God and us.
Now, we don't need to be punished for the bad things we do. We just need to believe with a true heart that He has died for you and pray to him for his forgiveness!