I would love to buy this game on sale and never get around to playing it.

What about Panic Disorder Survival Horror? You have to get through a full week, including 5 work days, 2 social events, and an errand...except you can have a panic attack at any time but also have a heart condition, so you're not sure if you're really having a panic attack or heart attack. If you guess wrong, you lose. Also you have to have a completely empty bladder and colon so you don't soil yourself at work and get fired or in a social setting and lose friends out of embarrassment if you happen to have a panic attack in those settings. Easy mode comes with a script for xanax. Hard mode comes with an abusive stalker ex and their family.

You can checkout https://store.steampowered.com/app/1392820/Milk_inside_a_bag_of_milk_inside_a_bag_of_milk/ - it’s not that but it’s a somewhat similar thing

I had a very similar idea but it's about avoiding contact and conversation out on the street and on public transportation. May or may not be influenced by real life experience.

I haven't played it, and the "social anxiety as horror"-slant feels more metaphorical than literal, but this makes me think of the game Homebody a little bit

Easy mode: party host has a dog or cat that will let you sit and pet it all night.

You've just proposed the next indie game of the year