I haven’t received my 2019 tax return & I filed via mail in Feb. I constantly check the IRS where’s my refund and it says status error. I want to file again. Should I?

I had someone prepare my taxes online for me through Turbo tax. She printed the paper out for me and I mailed it to the IRS in Feb. It’s been 9 months! I believed they never received it or lost it. Can someone please help me. I’m going crazy. I really want to file again even though the IRS encourages not too.