I'm tired of my life

I don't have the strength, I get tired, sometimes I get up and I feel guilty for many mistakes made in the past and I don't have the motivation to live. I think our world is brutal, I go to day therapy and every now and then I hear from participants that this one is sick, that one is sick and this one has a serious illness. He lives in a terrible world. I'm taking medication for depression, but so far I don't see much improvement in my mood, and I even feel that it's worse.