The fundamental force behind this is individualism. Every single technological innovation has made it easier for the individual to function better alone. Every societal change has emphasized the individual right over the (real or perceived) benefit of the collective. This trend seems to accelerate and absolutely nothing that is happening in western society even remotely suggests a possible turnaround.
You can take action, like get a new hobby that is just an okay activity but the people are great. Work on becoming a kick-ass friend yourself and cook for people and all that good stuff. But you'll do all that against massive societal forces. A few decades back you'd join one of the few organizations or clubs that happened in your area, and instantly be in a reliable community (if you adapt a little - let's ignore all the downsides for a moment). Friends would hook you up with a partner who's as nerdy as you. When I was young random strangers had regularly great conversations on trains. A city street was a village, you knew everyone.
You can take action, like get a new hobby that is just an okay activity but the people are great. Work on becoming a kick-ass friend yourself and cook for people and all that good stuff. But you'll do all that against massive societal forces. A few decades back you'd join one of the few organizations or clubs that happened in your area, and instantly be in a reliable community (if you adapt a little - let's ignore all the downsides for a moment). Friends would hook you up with a partner who's as nerdy as you. When I was young random strangers had regularly great conversations on trains. A city street was a village, you knew everyone.
That is not coming back anytime soon.