I had the third one for some time: the answer was medication, doctors and psychologists. These will obviously help with all of your points.
The meaningless of it all is still there, as a possibility, but there is also a fascination to it. You think. You feel. You love. You hate. You find things beautiful, or ugly. The universe is there and you are experiencing it. Even if it’s meaningless… Think about NOW. Isn’t it f*cking fascinating?
That makes me wanna enjoy the ride for as long as I can.
You can enjoy the ride too, and I have no doubts about it. Zero. In fact, I have negative doubts. I have REASONS.
Don’t use my medication just because it worked for me. Go to professionals and follow their criteria.
In fact, my dose is basically the smallest one you can get for an antidepressant.
Also, medication is not there to make you feel happier. It is there to give you a little push on getting back on track. But there is still work to do.
Food, sleep, sport, relationships… These are so much more critical than any medication. Bookmark some Andrew Huberman podcasts and get to work. You can do it.