Is this PPPD? Please help me fix this.

I’ve had dizziness for months that started around the same time as a severe panic attack and coming off Lexapro. I’ve had normal blood work, an ECG, and an ear exam, but no one has been able to tell me what’s wrong.

My symptoms:
- Constant dizziness that fluctuates
- Turning my head makes it much worse and it feels like my vision “lags” behind.
- Sometimes it feels like the inside of my head is spinning rather than the room.
- Grocery stores, scrolling on my phone, and computer screens make it much worse (after about 20 minutes on my computer I feel like I’m going to throw up).
- Being a passenger in a car makes it worse, but driving actually makes me feel better.

I’m wondering if this sounds like PPPD?

More than anything, I want to know what actually helped you. Did vestibular physiotherapy help? Medication? Exercises? Did it eventually go away? I’m honestly desperate at this point because this has completely changed my life, and I’d really appreciate hearing from anyone who’s been through something similar.