Hello.
It must be difficult to deal with these feelings and thoughts. However I appreciate the fact that you are working on it. The factors that you have mentioned does indicate symptoms of depression. However it is important to confirm if it is depression. For depression, it can be due to a certain factor or event that could have happened now or a while ago. It is important to understand this factor or event that led to the depression and work on the same.
Next Steps
As you are finding it difficult to talk to the people around you, you can try speaking to a counselor who is unknown to you and with whom you have the freedom to speak about what's happening. Even if you feel that there is no particular reason for you to feel this way, talking to a counselor will help you to ease your mind and help you to be more calm. You have the freedom to speak about anything that you want to, and it can help you to understand the reason for these feelings, that is if there is a reason.
Health Tips
I am sure that you are trying your best. I appreciate that. It is very important to make sure that you share your feelings and thoughts as much as possible rather than to keep it bottled up. This can be done with a friend you trust or with a counselor. I assure you that things can get better.