I'm sorry to hear about how you have been feeling, and sorry to hear about the dangers at work. Have you reconsidered continuing to go, given those dangers and since your grandmother said they could support you if you didn't go?
In terms of your therapy options, instead of assuming what has been offered to you isn't something you can afford, did you tell them you don't currently have insurance and ask about what options they offer for uninsured patients? Have you asked if that therapist might temporarily offer you weekly Zoom therapy since your old therapist had those conditions before we were all supposed to be sheltering in place, particularly if they don't have options for you with this per funding?
As well, for now and moving forward, have you considered filing for disability, Medicaid/Medicare or both?
Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed, it is the only thing that ever has. - Margaret Mead