Best OTC anxiety supplements?

I’m just at my wit’s end. It’s the 8374922th day in a row that I can’t control my anxiety. It’s ruining my life. I can’t focus or work or relax. I’m constantly overthinking and worrying about everything. I’ve been having panic attacks and week-long anxiety attacks. It’s interrupting my sleep and ability to focus on anything. It’s also ruining my relationship bc my moods are so haywire. 

I am uninsured and with rent and my car and other bills, I absolutely 100% can’t afford a doctor. I started drinking tea but it doesn’t really do much. I just want a daily supplement that I can buy with my groceries that actually helps curb my anxiety.