I think you know what you need to do re social media.
Look at it this way: i live in the middle of nowhere and i have friends who live in London and often post about what they do, going to restaurants, using public transport all the time including night-time, plays, films, concerts, art galleries, museums, free WiFi everywhere etc etc
And yes, sometimes i get a bit jealous with my weekdays only 9-6pm hourly bus, no museums, concerts, restaurants closer than an hour away etc etc. And then I'm happy that my friends are happy, and happier for me when i manage a gig or a museum or whatever.
So now we get to enjoy the great outdoors and our garden and suddenly people are jealous of me because they're stuck in London. So i feel bad for them for a bit and then i get on with my life.
Sorry you're having a hard time, OP, but comparison (as they say) is the thief of joy.
Also can i ask all these water/soap toting people: have you always done this? how did you handle it before the Virus Crisis