Thanks for your query.
There are some good anti-depressant medications available like escitalopram, bupropion
, etc. Bupropion is prefered in males. You can easily get a prescription for an anti-depressant from a physician. You should also go for blood tests.
Things get worse in the evening because a person is tired from the day's work. You are in the phase of life when a lot of change happens. Sometimes a person cannot figure out good and bad options and end up in a miserable state. My advice is that you focus on yourself and stay away from people who are causing stress
in your life. Whether to pursue further studies or to take up a job should be your decision. Maybe you can take up a job temporarily and can continue studies later in life.
Please do not put an end to your life. You are valuable to society. All phases are temporary and a person can get over it with a few modifications. It is also important that you do meditation
under supervision of people or groups who teach meditation.
Hope I helped