You don't need to withdraw from humanity, you only need to withdraw from Big Tech platforms. I'm continually amazed at the difference between the actual human race and the version of the human race that's presented to me online.
The first one is basically great, everywhere I go, when I interact with them they're some mix of pleasant, friendly, hapless, busy, helpful, annoyed, basically just the whole range of things that a person might be, with almost none of them being really awful.
Then I get online and look at Reddit or X or something like that and they're dominated by negativity, anger, bigotry, indignation, victimization, depression, anxiety, really anything awful that's hard to look away from, has been bubbled up to the top and oh yes next to it there are some cat videos.
I don't believe we are seeing some shadow side of all society that people can only show online, the secret darkness of humanity made manifest or something like that. Because I can go read random blogs or hop into some eclectic community like SDF and people in those places are basically pleasant and decent too.
I think it's just a handful of companies who used really toxic algorithms to get fantastically rich and then do a bunch of exclusivity deals and acquire all their competition, and spread ever more filth.
You can just walk away from the "communities" these crime barons have set up. Delete your accounts and don't return to their sites. Everything will immediately start improving in your life and most of the people you deal with outside of them (obviously not all!) turn out to be pretty decent.
The principal survival skill in this strange modern world is meeting new people regularly, being social, enjoying the rich life and multitude of benefits which arise from that, but also disconnecting with extreme rapidity and prejudice if you meet someone who's showing signs of toxic social media brain rot. Fortunately many of those people rarely go outside.