Go online to CLPgh and they will give you info about using private rooms. Also, if you live outside of the city, go to the website for the library nearest to you and look at their policy for private rooms.

You could do therapy from your car. Not ideal but a lot of people do it. You could hopefully find somewhere to park and connect to their wifi. A grocery store? Starbucks?

Carnegie library of Pittsburgh

https://carnegielibrary.libcal.com/reserve/spaces/main

These are spaces you can reserve at CLP-Main (Oakland). Make sure you book a pod and not a meeting room; you can click each pod to see exactly what you're getting. The meeting rooms are not fully private as they don't have ceilings, so you'll be heard throughout the back part of the reference department.

CLP-East Liberty also has a lone pod if that's more convenient: https://carnegielibrary.libcal.com/spaces?lid=8265

EDIT: Forgot to say that you don't need a library card or student ID or any ID at all to use this service.

This is what I do. I have straight up phone calls with my therapist and just park by where Gus’s sets up in the Commons park and nobody has ever bothered me or stared at me. Another good place is the outer limits of a parking lot of a box store. Of course this presupposes OP has access to a vehicle.

Funny story. I’ve done this once. Due to sunroof and screen brightness on high, my iPhone overheated half way through the call and wouldn’t turn on for 15-20 minutes so embarrassing lmfao

I’ve gotten into the groove of a non video phone call with my therapist who is aging out of the profession but has kept a handful of clients like me—we have a 20 year professional relationship with an 8 year gap in the middle. It’s personal to every such relationship, but I find the audio only call is more intimate and I’m able to focus better on the issues at hand. When we are on video conferences I feel more self conscious and it distracts me from the issues I need to focus on. I do enjoy the occasional office visit!

Just make sure you're not connected to the car's Bluetooth and doing hands-free calls. The car will act like one big speaker and the whole parking lot will learn things you didn't necessarily want strangers knowing about you.