I feel so lost. I don't know anymore.

Problem/Goal: I don't know where I'm going with my life. No dreams, no ambition nor aspirations,no friends nor any relationship. I feel so lost.

Context: 26M here, currently a wfh worker, introverted and feeling very lost in life. I don't know what to do anymore, nothing gives me happiness, I feel like I'm slowly growing up into this grumpy old man(kinda like squidward) who likes nothing and hates everything. My day to day has been such a boring routine that even the things that makes me motivated before feels nothing anymore(going on nature walks, jogging, exercising, playing games, movies, etc). Things just went for the worse when I lost my father, and I had to step up as the "man" of the house, taking on more responsibility and no longer being able to "live" as my own. You might say that I am a boring person, and honestly I can't even argue. I used to have friends I hang out with, but now I don't even get invites even on say my past classmates' weddings or birthdays.

Honestly, I don't think I've been truly happy recently. And even if I don't want to admit, dark thoughts has started coming in more and more. I don't know anymore.