Have you considered seeking help for your depression? I don't know what it's like to have it but I know there are treatments. As for the loneliness I don't really know how to help. I have though also done things just because others did it, and I regret some of it (especially posting in the politics forum). Altough if you log in here every ten minutes then taking a break from the internet and spending time in real life is probably a good idea. Maybe read a good book, or be on the internet but avoid the social media, or something else.
Positron832
It could just be that your brain has become less sensitive to dopamine. I know mine has because of an addiction, but I felt dopamine again in a long time after abstaining for 10 days. I will survive NNN this year. So I think you could take a break from what gave you the enjoyment and come back later maybe? I'm no pro in this matter so don't trust me.
PicayuneFarrago
It's probably a lot of stuff going on with my brain, like depression and loneliness. I probably should stop logging in every ten minutes. Might help a bit. But who knows. I wonder though, if posting my art was ever enjoyable or if I only started because it was something a lot of people did.