How do you cope with a fundamental lack of will to live ?

Let's say anything you try in life either within a span of a couple of months or a decade becomes irrelevant to you, a hobby/passion or just work or study.

I would like to do something else all the time but eventually get so disillusioned by it that I lose motivation to even live.

My job, my passion, everything has become irrelevant to my brain to the point that I don't even know what to do aside from being permanently online since I have no life outside of my job aside from my family.

It's kind of like being already dead, in the inside at least ?

Soon I will be 30 and still have nothing meaningful or at least I can't find meaning in these things or my life, it's like trying to chase something.

Well I cope with all of this with gaming, alcohol and social media, basically just waste my time but the fundamental question is, if I have to live like this isn't it just better to end it anyway ?