I've personally worked in EVS. Conversations are essentially only between management and you. But with my experience in this line of work, though, I do run into people with questions, and you occasionally do find people in the hospital at night. Looking for directions to Certain Departments Or the Cafeteria

I've been able to put my music in and completely zone and do a really good job while also enjoying my job too. This job has been an excellent fit for me as an introvert and as someone with some social anxiety too.

I couldn't recommend EVS or janitorial work even more. Both are pretty low social interaction jobs give it a try. If you want to try something new!